Wikipedia: en.wikipedia.or ... https://en.wikipedia.org/wiki/Second_Language_Research
Wikipedia: hu.wikipedia.or ... https://hu.wikipedia.org/wiki/Second_Language_Research
Wikipedia: ja.wikipedia.or ... https://ja.wikipedia.org/wiki/%E7%AC%AC%E4%BA%8C%E8%A8%80%E8%AA%9E%E7%A0%94%E7%A9%B6_(%E9%9B%91%E8%AA%8C)
SUDOC: www.sudoc.fr/03 ... http://www.sudoc.fr/039322319
Wikidata: www.wikidata.or ... http://www.wikidata.org/entity/Q7443393
FATCAT: fatcat.wiki/con ... https://fatcat.wiki/container/46pfcnrbpfhtnc3vsvdp6dzxyq
Wikipedia: en.wikipedia.or ... https://en.wikipedia.org/wiki/Second_Language_Research
Wikipedia: hu.wikipedia.or ... https://hu.wikipedia.org/wiki/Second_Language_Research
Wikipedia: ja.wikipedia.or ... https://ja.wikipedia.org/wiki/%E7%AC%AC%E4%BA%8C%E8%A8%80%E8%AA%9E%E7%A0%94%E7%A9%B6_(%E9%9B%91%E8%AA%8C)
SUDOC: www.sudoc.fr/03 ... http://www.sudoc.fr/039322319
Wikidata: www.wikidata.or ... http://www.wikidata.org/entity/Q7443393
FATCAT: fatcat.wiki/con ... https://fatcat.wiki/container/46pfcnrbpfhtnc3vsvdp6dzxyq
Google: www.google.com/ ... https://www.google.com/search?q=ISSN+%220267-6583%22
Bing: www.bing.com/se ... https://www.bing.com/search?q=ISSN+%220267-6583%22
Yahoo: search.yahoo.co ... https://search.yahoo.com/search?p=ISSN%20%220267-6583%22
CROSSREF: search.crossref ... https://search.crossref.org/?q=+0267-6583
MIR@BEL: reseau-mirabel. ... https://reseau-mirabel.info/revue/issn/0267-6583
Pubmed: pubmed.ncbi.nlm ... https://pubmed.ncbi.nlm.nih.gov/?term=%220267-6583%22%5BJournal%5D&sort=
