http://3313.bepe.ar/cgi-bin/koha/opac-search.pl?q=ccl=au%3AMarx%2C%20Carlos%2C%201818-1883%20and%20available&format=rss2 Search results for 'au:Marx, Carlos, 1818-1883 and available' at Biblioteca Central de la Provincia de Buenos Aires 0 20