http://pc.h12o.es/cgi-bin/koha/opac-search.pl?idx=an%2Cphr&q=431%26limit%3Dau%3AGuti%C3%83%C2%A9rrez%20Santos%2C%20Eduardo&format=rss2 Search results for 'an,phr: 431&limit=au:Gutiérrez Santos, Eduardo' at 0 20