https://sibi.upn.mx/cgi-bin/koha/opac-search.pl?q=ccl=%28su%3A%22Mejora%20social%22%29&sort_by=title_az&format=rss 3 0 50 ISBN: https://sibi.upn.mx/cgi-bin/koha/opac-detail.pl?biblionumber=189019 By Mayor Paredes, Domingo | Rodríguez Martínez, Dolores.
Murcia, España .
535-552

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