https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=copydate%3A%221973%20%282001%20impr.%29.%22&sort_by=title_az&format=rss 2 0 50 ISBN:9505180446 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=19788 ]]> By Weber, Max,.
Buenos Aires : Amorrortu, 1973 .
269 p. 9505180446

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=19788 ISBN:9682301653 | 9682316952 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=24002 ]]> By Freire, Paulo,.
México : Siglo XXI, 1973 .
108 p. 9682301653 | 9682316952

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