https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?q=ccl=an%3A21570%20and%20au%3ACollell%2C%20Mar%C3%83%C2%ADa%20Rosa&format=rss2 Search results for 'an:21570 and au:Collell, María Rosa' at Biblioteca UGB 0 20