Wikipedia: en.wikipedia.or ... https://en.wikipedia.org/wiki/Physics_Education
SUDOC: www.sudoc.fr/03 ... http://www.sudoc.fr/03877206X
Wikidata: www.wikidata.or ... http://www.wikidata.org/entity/Q7189683
FATCAT: fatcat.wiki/con ... https://fatcat.wiki/container/j4xbh5letre6ra7zc5dykcayjy
Wikipedia: en.wikipedia.or ... https://en.wikipedia.org/wiki/Physics_Education
SUDOC: www.sudoc.fr/03 ... http://www.sudoc.fr/03877206X
Wikidata: www.wikidata.or ... http://www.wikidata.org/entity/Q7189683
FATCAT: fatcat.wiki/con ... https://fatcat.wiki/container/j4xbh5letre6ra7zc5dykcayjy
Google: www.google.com/ ... https://www.google.com/search?q=ISSN+"0031-9120"
Bing: www.bing.com/se ... https://www.bing.com/search?q=ISSN+%220031-9120%22
Yahoo: search.yahoo.co ... https://search.yahoo.com/search?p=ISSN%20%220031-9120%22
CROSSREF: search.crossref ... https://search.crossref.org/?q=+0031-9120
