https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Yel%C3%B3n%2C%20Stephen%20L.%2C%22&sort_by=title_az&format=rss 3 0 50 ISBN: https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=62275 By Yelon, Stephen L.
Indiana, EUA .
65-70

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=62275 ISBN:9682435935 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=16214 ]]> By Davis, Robert H..
México : Trillas, 1990 .
403 p. 9682435935

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=16214 ISBN:9682425212 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=49557 ]]> By Yelón, Stephen L..
México : Trillas, 1988 .
615 p. : 9682425212

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