Wikipedia: en.wikipedia.or ... https://en.wikipedia.org/wiki/Northern_History
Wikipedia: pt.wikipedia.or ... https://pt.wikipedia.org/wiki/Northern_History
SUDOC: www.sudoc.fr/03 ... http://www.sudoc.fr/038870142
Wikidata: www.wikidata.or ... http://www.wikidata.org/entity/Q15767281
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Wikipedia: en.wikipedia.or ... https://en.wikipedia.org/wiki/Northern_History
Wikipedia: pt.wikipedia.or ... https://pt.wikipedia.org/wiki/Northern_History
SUDOC: www.sudoc.fr/03 ... http://www.sudoc.fr/038870142
Wikidata: www.wikidata.or ... http://www.wikidata.org/entity/Q15767281
FATCAT: fatcat.wiki/con ... https://fatcat.wiki/container/j4lwvum5x5galfa3a47ggf4w3y
Google: www.google.com/ ... https://www.google.com/search?q=ISSN+%220078-172X%22
Bing: www.bing.com/se ... https://www.bing.com/search?q=ISSN+%220078-172X%22
Yahoo: search.yahoo.co ... https://search.yahoo.com/search?p=ISSN%20%220078-172X%22
CROSSREF: search.crossref ... https://search.crossref.org/?q=+0078-172X
Pubmed: pubmed.ncbi.nlm ... https://pubmed.ncbi.nlm.nih.gov/?term=%220078-172X%22%5BJournal%5D&sort=
