http://pc.h12o.es/cgi-bin/koha/opac-search.pl?idx=an%2Cphr&q=831%26limit%3Dau%3ARuiz%20Contreras%2C%20Jes%C3%83%C2%BAs&format=rss2 Search results for 'an,phr: 831&limit=au:Ruiz Contreras, Jesús' at 0 20