http://catalogo.umet.edu.ar/cgi-bin/koha/opac-search.pl?q=ccl=an%3A%226057%22%20_dsc%20and%20su-to%3Alucha%20de%20clases&format=rss2 Search results for 'an:"6057" _dsc and su-to:lucha de clases' at Catalogo de las Biblioteca UMET - ISO y CITRA (CONICET) 0 20