https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Heslep%2C%20Robert%20D.%22&sort_by=title_az&format=rss 2 0 50 ISBN: https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=63389 By Heslep, Robert D..
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413-428

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=63389 ISBN:9506943001 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=135608 ]]> By Heslep, Robert D..
Buenos Aires, Argentina : Grupo Editor Latinoamericano, S.P.L., 1993 .
266 p. 9506943001

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