https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Becker%2C%20Gary%20Stanley%2C%22&sort_by=title_az&format=rss 3 0 50 ISBN:842068063X https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=6640 ]]> By Becker, Gary Stanley,.
Madrid : Alianza, 1983 .
284 p. : 842068063X

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=6640 ISBN: https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=56215 By Becker, Gary Stanley,.
México : FCE, 1977 .
277 p. :

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