https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=%28su%3A%22DISCIPLINA%20FORMAL%22%29&sort_by=title_az&format=rss 2 0 50 ISBN:9682428610 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=4959 ]]> By Dobson, James C.,.
México : Trillas, 1989 .
206 p. 9682428610

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=4959 ISBN:8432986283 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=9554 ]]> By Corneloup, Alain.
Barcelona (Esp.) : CEAC, .
69 p. : 8432986283

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