https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Pe%C3%B1a%20Torres%2C%20Alfonso%2C%22&sort_by=title_az&format=rss 2 0 50 ISBN: https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=64681 By PEÑA TORRES, Alfonso.
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32-34

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=64681 ISBN:9684351232 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=45618 ]]> By Nieto Herrera, Margarita E..
México : Prensa Médica Mexicana, 1987 .
xxi 310 p. : 9684351232

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