https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Langford%2C%20Peter%22&sort_by=title_az&format=rss 2 0 50 ISBN:847509516X https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=14255 ]]> By Langford, Peter.
México : Paidós, 1989 .
158 p. 847509516X

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]]> https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=14255 ISBN:8475096093 https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=14256 ]]> By Langford, Peter.
Barcelona, Esp. : Ministerio de Educación y Ciencia : | Paidós, 1990 .
191 p. 8475096093

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