https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Oswald%2C%20Ursula%2C%22&sort_by=title_az&format=rss 4 0 50 ISBN: https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=11815 By Oswald, Ursula,.
México : UNAM, 1979 .
392 p.

]]> Place hold on Cooperativas ejidales y capitalismo estatal dependiente /

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=11815 ISBN:9707011335 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=103845 ]]> México : M. A. Porrúa, 2000 .
480 p. 9707011335

]]> Place hold on Estudios para la paz desde una perspectiva global :

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=103845 ISBN:9683664105 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=180871 ]]> By Oswald, Ursula,.
México : UNAM, Centro Regional de Investigaciones Multidiciplinarias, 1999 .
340 p. : 9683664105

]]> Place hold on Fuenteovejuna o caos ecológico /

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=180871 ISBN:9685973946 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=206387 ]]> By Oswald, Ursula,.
México, D.F. : Universidad Autónoma Metropolitana, Unidad Xochimilco, 1983 .
237 páginas : 9685973946

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