https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Willems%2C%20Edgar%22&sort_by=title_az&format=rss 2 0 50 ISBN:8449310091 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=91032 ]]> By Willems, Edgar.
Barcelona, Esp. : Paidós, 2000 .
160 p. : 8449310091

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=91032 ISBN:9688531146 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=58178 ]]> By Willems, Edgar.
México : Paidós, 1989 .
228 p. 9688531146

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