https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=copydate%3A%221971%20%281980%20impr.%29.%22&sort_by=title_az&format=rss 4 0 50 ISBN:9682300347 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=6637 ]]> By Marx, Karl,.
México : Siglo XXI, 1971 .
171 p. 9682300347

]]> Place hold on El capital :

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=6637 ISBN:9681606485 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=107987 ]]> By Schurmann, Franz.
México : FCE, 1971 .
879 p. 9681606485

]]> Place hold on China comunista :

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=107987 ISBN: https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=111929 By Marx, Karl,.
México : Cultura Popular, 1971 .
194 p.

]]> Place hold on Miseria de la filosofía /

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=111929 ISBN:9684270372 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=45033 ]]> By Guillén Romo, Arturo.
México : Nuestro Tiempo, 1971 .
173 p. 9684270372

]]> Place hold on Planificación económica a la mexicana /

]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=45033