https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?idx=an%2Cphr&q=5809%26limit%3Dsu-to%3AEMPLEADOS%26limit%3Dau%3ACalder%C3%83%C2%B3n%2C%20Xiomara%20Patricia%26limit%3Dsu-to%3ATESIS%26limit%3Dholdingbranch%3AUGB%26limit%3Dholdingbranch%3AUSU&format=rss2 Search results for 'an,phr: 5809&limit=su-to:EMPLEADOS&limit=au:Calderón, Xiomara Patricia&limit=su-to:TESIS&limit=holdingbranch:UGB&limit=holdingbranch:USU' at Biblioteca UGB 0 20