https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?q=ccl=an%3A6435%20and%20holdingbranch%3AUSU%20and%20au%3AFuentes%2C%20Roberto%20Carlos%20and%20su-to%3ATRABAJADORES%20EXTRANJEROS%20and%20itype%3AVM&format=rss2 Search results for 'an:6435 and holdingbranch:USU and au:Fuentes, Roberto Carlos and su-to:TRABAJADORES EXTRANJEROS and itype:VM' at Biblioteca UGB 0 20