https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?idx=an%2Cphr&q=3026%26limit%3Dholdingbranch%3AUSU%26limit%3Dau%3AClar%C3%83%C2%A1%20Guevara%2C%20Mario%20Adolfo&format=rss2 Search results for 'an,phr: 3026&limit=holdingbranch:USU&limit=au:Clará Guevara, Mario Adolfo' at Biblioteca UGB 0 20