https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Cashdan%2C%20Sheldon%22&sort_by=title_az&format=rss 2 0 50 ISBN:8483063336 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=116311 ]]> By Cashdan, Sheldon.
Madrid : Debate, 2000 .
271 p. 8483063336

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=116311 ISBN:0137316878 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=49359 By Cashdan, Sheldon.
Bogotá : Prentice-Hall, 1973 .
158 p. : 0137316878

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