The ISSN Portal provides bibliographic records enriched by these data sources.



PublisherAmerican Theological Library Association - Religion DataBase
URL https://www.atla.com
http://dl.atla.com
Type of serviceIndexing, abstracting and citation services
DisciplinesReligion & theology
Presentation The ATLA Religion Database® (ATLA RDB®) is the premier index to journal articles, book reviews, and collections of essays in all fields of religion. ATLASerials PLUS™ (ATLAS PLUS™)​ is a full-text collection.
In April 2018, ATLA merged the ATLA Catholic Periodical and Literature Index® (ATLA CPLI®) into the ATLA Religion Database® (ATLA RDB®).
Types of resources Journal articles, book reviews, essays
Date createdFirst published in print in 1949, released electronically in 1981
Publication coverage datesFrom 1949 to present and retrospective indexing for some journal issues as far back as the nineteenth century (1818)
Geographical coverageInternational (33 countries, 16 languages)
Classification Enriched LCSH (Library of Congress Subject Headings).
As a member of the CONSER programme, ATLA cooperates with the Library of Congress to index serial publications. ATLA's vocabulary is exposed in LOD: http://id.loc.gov/vocabulary/subjectSchemes/atla.html
Selection criteria / Methodology Journals are selected for inclusion according to their scholarly merit and scope.
https://www.atla.com/products/publishing/Pages/Evaluation-RDB.aspx
Number of currently indexed resources~ 1,000 titles
Annual growth80 titles
Updating frequencyMonthly

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PublisherCABI
(Centre for Agriculture and Biosciences International)
URLhttp://www.cabi.org/publishing-products/online-information-resources/cab-abstracts
Type of serviceIndexing, abstracting and citation services
DisciplinesApplied life sciences
PresentationCAB Abstracts is the leading English-language bibliographic information service providing access to the world’s applied life sciences literature. It comes with CABI Full Text, giving users automatic access to over 410,000 journal articles, conference papers and reports (80% of which are not available electronically anywhere else).
Types of resourcesJournals, conferences & discussion papers, reports, bulletins, newsletters
Date created1973
Publication coverage datesFrom 1973 to present
1910 to present (archives included)
Geographical coverageInternational (over 120 countries)
Classificationhttps://www.cabi.org/cabthesaurus/
Selection criteria / Methodology - Scientific specialists select relevant records from more than 8,000 serials, books and conference proceedings on the basis of quality and subject relevance and following CABI’s journal selection criteria guidelines.
- Selection criteria: https://www.cabi.org/uploads/CABI/publishing/fulltext-products/Journal%20Selection.pdf
- Includes less well-known and non-English journals and those published by independent and learned publishers.
Number of currently indexed resources1,044 journal titles
Annual growth350,000 abstracts d'articles, 35%
Updating frequencyMonthly

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PublisherCABI
URLhttp://www.cabi.org/publishing-products/online-information-resources/global-health
Type of serviceIndexing, abstracting and citation services
DisciplinesPublic health
PresentationGlobal Health is the only specialist bibliographic abstracting and indexing database dedicated to public health, completing the picture of international medical and health research by capturing key literature that is not covered by other databases.
Types of resourcesJournals, reports, books, conferences
Date created1973
Publication coverage datesFrom 1973 to present
Geographical coverageInternational (over 100 countries, 50 languages)
Classificationhttps://www.cabi.org/cabthesaurus/
Selection criteria / Methodology - Scientific specialists select relevant records from more than 8,000 serials, books and conference proceedings on the basis of quality and subject relevance and following CABI’s journal selection criteria guidelines.
- Selection criteria: https://www.cabi.org/uploads/CABI/publishing/fulltext-products/Journal%20Selection.pdf
- Includes less well-known and non-English journals and those published by independent and learned publishers.
Number of currently indexed resources7,000 titles
Annual growth150,000 records (~ 5%)
Updating frequencyMonthly

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PublisherAmerican Economic Association
URLhttp://www.aeaweb.org/econlit
Type of serviceIndexing, abstracting and citation services
DisciplinesEconomics
PresentationAn expanded version of the Journal of Economic Literature (JEL) indexes of journals, books, and dissertations, EconLit covers both economic theory and application. Over 80% of all current records include abstracts. Also included are full-text of book reviews published in the Journal of Economic Literature since 1993. The database also includes links to full-text of some 40,000 working papers in economics.
Types of resourcesJournals (1,000), books, dissertations, working papers
Date created1969
Publication coverage datesFrom 1969 to present
Geographical coverageInternational
ClassificationJEL
Selection criteria / MethodologyPeer-reviewed economic content
Number of currently indexed resources1,000 journal titles
Annual growth30,000 records
Updating frequencyMonthly

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PublisherAmerican Geosciences Institute
URLhttp://www.americangeosciences.org/georef/georef-information-services
Type of serviceIndexing, abstracting and citation services
DisciplinesGeosciences
PresentationGeoRef is the most comprehensive database in the geosciences worldwide.
Types of resourcesJournal articles, books, maps, conference papers, reports and theses
Date created1966
Publication coverage datesFrom 1666 to present (US) and from 1933 to present (rest of the world)
Geographical coverageInternational
ClassificationGeoRef Thesaurus : https://pubs.geoscienceworld.org/georef
Selection criteria / Methodology
Number of currently indexed resources3,500 journals
Annual growth80,000 records
Updating frequencyBiweekly with approximately 3,000 new records added per update.

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PublisherWiley-Blackwell
URLhttp://www.linguisticsabstracts.com
Type of serviceIndexing, abstracting and citation services
DisciplinesLinguistics
PresentationEdited by the Department of Linguistics / University of Alberta (Canada), Linguistics Abstracts Online provides indexing to over 800 journals in linguistics. English-language abstracts are available for articles written in other languages. The focus is on the theory and practice of general linguistics including all the recognized "core" areas of linguistic enquiry and their major interdisciplinary points of connection.
Types of resourcesJournals
Date created1985
Publication coverage datesFrom 1985 to present
Geographical coverageInternational
Classification
Selection criteria / Methodology
Number of currently indexed resourcesOver 120,000 linguistic abstracts from over 800 journals
Annual growth
Updating frequencyContinuously

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PublisherPubMed, U.S. National Library of Medicine
URLhttp://pubmed.gov
Type of serviceIndexing, abstracting and citation services
DisciplinesLife sciences with a focus on biomedicine
PresentationMEDLINE® is the National Library of Medicine® (NLM®) journal citation database. Started in the 1960s, it now provides more than 24 million references to biomedical and life sciences journal articles back to 1946. The MEDLINE database is directly searchable from NLM as a subset of the PubMed® database.
Types of resourcesScholarly journals; a small number of newspapers, magazines, and newsletters.
Date created1964
Publication coverage datesFrom 1946 to present
Geographical coverageInternational
ClassificationMedical Subject Headings (MeSH®), NLM controlled vocabulary
Selection criteria / MethodologyPublishers submit journals to an NIH-chartered advisory committee, the Literature Selection Technical Review Committee (LSTRC), which reviews and recommends journals for MEDLINE. The LSTRC considers the quality of the scientific content of a journal, including originality and the importance of the content for the MEDLINE global audience, using the guidelines found on the NLM Fact Sheet MEDLINE Journal Selection: https://www.nlm.nih.gov/pubs/factsheets/jsel.html
Number of currently indexed resourcesCitations from more than 5,600 scholarly journals published around the world.
Annual growth500 titles
Updating frequencyDaily

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PublisherAmerican Psychological Association
URLhttp://www.apa.org/pubs/databases/psycinfo/index.aspx
Type of serviceIndexing, abstracting and citation services
DisciplinesPsychological sciences
PresentationSince 1967, PsycINFO® has fostered the exchange of peer-reviewed research in digital format. Focused on the interdisciplinary aspects of the worldwide behavioral and social science research and literature, PsycINFO has grown to become the most trusted and comprehensive library in its domain.
Types of resourcesJournals (80%), books (3%) and books chapters (8%), dissertations (12%).
Date created1967
Publication coverage datesFrom 1597 to present, with comprehensive coverage from the 1880s
Geographical coverageInternational
ClassificationThesaurus of Psychological Index Terms® : http://www.apa.org/pubs/databases/training/thesaurus.aspx
Selection criteria / MethodologyJournals covered if psychologically relevant, archival, scholarly, peer-reviewed, and regularly published with titles, abstracts, and keywords in English.
Number of currently indexed resources2,300 titles
Annual growth
Updating frequencyTwice weekly

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PublisherElsevier
URLhttp://www.elsevier.com/online-tools/scopus
Type of serviceIndexing, abstracting and citation services
DisciplinesInterdisciplinary
PresentationScopus is the largest abstract and citation database of peer-reviewed literature. Delivering a comprehensive overview of global, interdisciplinary scientific data and literature, across all research fields, Scopus features smart tools to track, analyze and visualize research.
Types of resourcesJournals, books and conference proceedings.
Over 15% of peer-reviewed titles are full open access titles (according to DOAJ and/or ROAD).
Date created2004
Publication coverage datesFrom 1859 to present
Geographical coverageInternational
Classification Scopus manually adds index terms for 80% of the titles included in Scopus. These index terms are derived from thesauri that Elsevier owns or licenses, and are added to improve search recall.
- Ei Thesaurus (engineering, technology, physical sciences)
- Emtree medical terms (life sciences, health sciences)
- MeSH (life sciences, health sciences)
- GEOBASE Subject Index (geology, geography, earth and environmental sciences)
- FLX terms, WTA terms (fluid sciences, textile sciences)
- Regional Index (geology, geography, earth and environmental sciences)
- Species Index (biology, life sciences)
Selection criteria / Methodology The content on Scopus comes from over 5,000 publishers that must be reviewed and selected by an independent Content Selection and Advisory Board (CSAB) to be, and continue to be, indexed on Scopus. The CSAB is an international group of scientists, researchers and librarians who represent the major scientific disciplines. Any serial publication with an ISSN can be suggested for review and covered on Scopus. Journals eligible for review are evaluated on the following criteria in five categories: journal policy, content, citedness, regularity and online availability. Scopus annually re-evaluates low-performing journals based on a set of metrics and benchmarks and in comparison to peer journals in their subject fields.
Content policy and selection: https://www.elsevier.com/solutions/scopus/how-scopus-works/content/content-policy-and-selection
Number of currently indexed resources25,300 journal titles
Annual growth750 titles
Updating frequencyDaily

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PublisherDeveloped by SCImago Lab (Spain) and powered by Scopus
URLhttps://www.scimagojr.com
Type of serviceJournal indicators, impact factors
DisciplinesInterdisciplinary
Presentation SJR indicator measures the visibility of the scholarly journals contained in the Scopus® database from 1996. With SJR, the subject field, quality and reputation of the journal have a direct effect on the value of a citation. The SCImago Journal Rank (SJR) indicator is developed by SCImago Lab from the widely known algorithm Google PageRank™. SJR is a publicly available metric and can also be attained outside of the Scopus platform through SCImago website.
Types of resourcesJournals, book series, conference proceedings
Date created2008
Publication coverage datesFrom 1996 to present
Year N-3 (articles published in the previous 3 years
Geographical coverageInternational
Classification
Selection criteria / MethodologyA journal's SJR is a numeric value indicating the average number of weighted citations received during a selected year per document published in that journal during the previous three years.
Number of currently indexed resources25,300 journal titles
Annual growth750 titles
Updating frequencyAnnually

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PublisherDeveloped by Leiden University’s Centre for Science & Technology Studies (CWTS) in The Netherlands and powered by Scopus.
URLhttps://service.elsevier.com/app/answers/detail/a_id/14884/c/10547/supporthub/scopus/related/1/
Type of serviceJournal indicators, impact factors
DisciplinesInterdisciplinary
Presentation SNIP measures contextual citation impact by weighting citations based on the total number of citations in a subject field. This unique perspective enables direct comparison of sources in different subject fields. SNIP helps authors to identify which journals are performing best within their subject field, helping them decide where to publish.
Types of resourcesJournals
Date created2012
Publication coverage datesFrom 2012 to present
Year N-3 (articles published in the previous 3 years
Geographical coverageInternational
Classification
Selection criteria / MethodologyIt is a ratio, with a numerator and a denominator. SNIP's numerator is a journal's impact per publication (IPP). This is simply the average number of citations received in a particular year by papers published in the journal during the three preceding years.
Number of currently indexed resources25,300 journal titles
Annual growth750 titles
Updating frequencyAnnually

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PublisherPowered by Scopus
URLhttps://journalmetrics.scopus.com/index.php/Faqs
Type of serviceJournal indicators, impact factors
DisciplinesInterdisciplinary
PresentationCitescore is a new standard developed and powered by Scopus (Elsevier) that gives a comprehensive, transparent and current view of a journal’s impact. CiteScore metrics are part of the Scopus basket of journal metrics that includes SNIP, SJR, citation- and document- counts and percentage cited. The integration of these metrics into Scopus provides insights into the citation impact of scholarly journals referenced in Scopus.
Types of resourcesJournals
Date created2016
Publication coverage datesFrom 2011 to present
Year N-3 (articles published in the previous three years)
Geographical coverageInternational
Classification
Selection criteria / MethodologyCiteScore is the number of citations received by a journal in one year to documents published in the three previous years, divided by the number of documents indexed in Scopus published in those same three years.
Number of currently indexed resources25,300 journal titles
Annual growth750 titles
Updating frequencyAnnually (monthly for Citescore Tracker)

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PublisherLatindex is a cooperative information system about scientific and technical journals published in Latin America, the Caribbean, Spain and Portugal. Latindex was created by the National Autonomous University of Mexico (UNAM) in 1997.
URLhttp://www.latindex.org/latindex/inicio
Type of serviceRegistries
DisciplinesInterdisciplinary
PresentationCatálogo references and describes journals that meet a set of editorial quality criteria established by Latindex. Catálogo is a subset of another bibliographic product of Latindex, Directorio, which references all scholarly journals published in Ibero-American countries and the Carribean. Catálogo and Directorio are published by Latindex.
Types of resourcesJournals
Date created2002
Publication coverage datesFrom 1853 to present
Geographical coverageLatin America, the Caribbean, Spain and Portugal (26 countries)
ClassificationUDC (Universal Decimal Classification)
Selection criteria / MethodologyThere are 36 characteristics: http://www.latindex.org/latindex/editElectronicas
There are 36 editorial features. A journal must comply with the eight mandatory characteristics and at least 17 of the remaining characteristics, for a minimum of 25 fulfilled. If a publication fails to meet some of the basic characteristics, it does not enter Catálogo, even if the total sum of criteria met exceeds 25. Journals may be re-qualified, either at the request of the publisher or for consideration of the respective Latindex national centre, in accordance with the policies established by each centre.
Number of currently indexed resources9,300 journals titles
Annual growth~ 400 titles
Updating frequencyDaily

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PublisherDOAJ
URLhttps://doaj.org
Type of serviceRegistries
DisciplinesInterdisciplinary
PresentationDOAJ is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals. DOAJ is independent. All funding is via donations from sponsors and members. The Directory aims to increase the visibility and ease of use of open access academic journals—regardless of size and country of origin—thereby promoting their visibility, usage and impact.
Types of resourcesJournals
Date created2003
Publication coverage dates
Geographical coverageInternational
ClassificationLibrary of Congress Subject Headings (LCSH)
Selection criteria / MethodologyThe Directory aims to be comprehensive and covers all open access academic journals that use an appropriate quality control system
See "Publishing best practice and basic standards for inclusion" and What is the DOAJ Seal of Approval for Open Access Journals (the DOAJ Seal)?
Number of currently indexed resources11,700 journals titles
Annual growth~ 2,000 titles
Updating frequencyDaily

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PublisherU.S. National Institutes of Health's National Library of Medicine
URLhttp://www.ncbi.nlm.nih.gov/pmc
Type of serviceRegistries
DisciplinesLife sciences with a focus on biomedicine
PresentationTo advance science and improve human health, NIH makes the peer-reviewed articles it funds publicly available on PubMed Central. PMC is a free full-text archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health's National Library of Medicine. As a digital counterpart to the NLM extensive print journal collection, it is a repository for journal literature. Some PMC journals are also MEDLINE journals.
Types of resourcesJournal citations
Date created2000
Publication coverage dates
Geographical coverageInternational
ClassificationMedical Subject Headings (MeSH®), NLM controlled vocabulary
Selection criteria / Methodology Publishers and authors must comply with the NIH Public Access Policy and the PMC scope and NLM scientific quality standard.
PubMed citations come from 1) MEDLINE indexed journals, 2) journals/manuscripts deposited in PMC, and 3) NCBI Bookshelf.
Number of currently indexed resources2 million citations (PMC OA subset)
Annual growth
Updating frequencyDaily

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PublisherEDINA, University of Edinburgh
URLhttp://thekeepers.org
Type of serviceRegistries
DisciplinesInterdisciplinary
PresentationThe Keepers Registry is a service to provide easily accessible information about inclusion of journals in archiving services. This information is cross-checked against the ISSN Portal, which provides a central spine for the Keepers Registry. The Keepers Registry main purposes are to enable librarians and policy makers to find out which e-journals are preserved, by which agency and with what terms of access. It can also be used to highlight the e-journals still "at risk of loss".
Types of resourcesE-serials, mainly scholarly and cultural journals in electronic form
Date created2011
Publication coverage dates
Geographical coverageInternational
Classification
Selection criteria / MethodologyThis is a registry for organizations that hold e-serial content with intent to archive for the long term. It is also a showcase for the Keepers of digital content that libraries and publishers should contact to ensure preservation of e-journal content. Each of the registered Keepers supplies information about the extent of volume and issue content that it has ingested for each serial title.
Number of currently indexed resources38,600 journal titles
Annual growth
Updating frequencyMonthly. The date of last update is reported for each archiving agency.

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