Wikipedia: de.wikipedia.or ... https://de.wikipedia.org/wiki/Journal_of_Recreational_Mathematics
Wikipedia: en.wikipedia.or ... https://en.wikipedia.org/wiki/Journal_of_Recreational_Mathematics
Wikipedia: fr.wikipedia.or ... https://fr.wikipedia.org/wiki/Journal_of_Recreational_Mathematics
Wikipedia: ru.wikipedia.or ... https://ru.wikipedia.org/wiki/Journal_of_Recreational_Mathematics
SUDOC: www.sudoc.fr/03 ... http://www.sudoc.fr/038737779
Wikidata: www.wikidata.or ... http://www.wikidata.org/entity/Q3186943
FATCAT: fatcat.wiki/con ... https://fatcat.wiki/container/rcjyv7iw6fc3xpdfo5sqcscoua
Wikipedia: de.wikipedia.or ... https://de.wikipedia.org/wiki/Journal_of_Recreational_Mathematics
Wikipedia: en.wikipedia.or ... https://en.wikipedia.org/wiki/Journal_of_Recreational_Mathematics
Wikipedia: fr.wikipedia.or ... https://fr.wikipedia.org/wiki/Journal_of_Recreational_Mathematics
Wikipedia: ru.wikipedia.or ... https://ru.wikipedia.org/wiki/Journal_of_Recreational_Mathematics
SUDOC: www.sudoc.fr/03 ... http://www.sudoc.fr/038737779
Wikidata: www.wikidata.or ... http://www.wikidata.org/entity/Q3186943
FATCAT: fatcat.wiki/con ... https://fatcat.wiki/container/rcjyv7iw6fc3xpdfo5sqcscoua
Google: www.google.com/ ... https://www.google.com/search?q=ISSN+%220022-412X%22
Bing: www.bing.com/se ... https://www.bing.com/search?q=ISSN+%220022-412X%22
Yahoo: search.yahoo.co ... https://search.yahoo.com/search?p=ISSN%20%220022-412X%22
