https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Weikart%2C%20David%20P.%2C%22&sort_by=title_az&format=rss 2 0 50 ISBN:9280311972 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=92848 ]]> By Weikart, David P..
Paris : UNESCO, International Institute for Educational Planning, 2000 .
93 p. 9280311972

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=92848 ISBN:9682414202 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=41343 ]]> By Hohmann, Mary.
México : Trillas, 1984 .
415 p. : 9682414202

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