http://catalogo.umet.edu.ar/cgi-bin/koha/opac-search.pl?q=ccl=an%3A%2213083%22%20_dsc%20and%20au%3APorter%2C%20Michael&format=rss2 Search results for 'an:"13083" _dsc and au:Porter, Michael' at Catalogo de las Biblioteca UMET - ISO y CITRA (CONICET) 0 20