https://biblioteca.cun.edu.co/cgi-bin/koha/opac-search.pl?q=ccl=an%3A50200&sort_by=relevance&format=rss 3 0 50 ISBN:8423423832 https://biblioteca.cun.edu.co/cgi-bin/koha/opac-detail.pl?biblionumber=13653 By Porter, Michael E..
Barcelona : Deusto, 2006 .
222 p. 8423423832

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]]> https://biblioteca.cun.edu.co/cgi-bin/koha/opac-detail.pl?biblionumber=13653 ISBN:9702402034 https://biblioteca.cun.edu.co/cgi-bin/koha/opac-detail.pl?biblionumber=15831 By Porter, Michael E..
México : Compañia Editorial Continental, 1996 9702402034

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]]> https://biblioteca.cun.edu.co/cgi-bin/koha/opac-detail.pl?biblionumber=15831 ISBN:9682607787 https://biblioteca.cun.edu.co/cgi-bin/koha/opac-detail.pl?biblionumber=15832 By Porter, Michael E..
México : Compañia Editorial Continental, 1996 9682607787

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