https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Earth%20Works%20Group%22&sort_by=title_az&format=rss 2 0 50 ISBN:9681321537 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=143112 ]]> México : Diana, 1991 .
149 páginas 9681321537

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=143112 ISBN:9684034520 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=52701 ]]> México : Selector, 1995 .
175 p. : 9684034520

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