https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?q=ccl=Provider%3AUniversidad%20Gerardo%20Barrios%20and%20location%3AINI%20and%20su-to%3APUBLICACIONES%20CIENTIFICAS%20and%20holdingbranch%3AUGB%20and%20su-to%3APUBLICACIONES%20CIENTIFICAS%20and%20au%3AVillanueva%20Ort%C3%83%C2%ADz%2C%20Jos%C3%83%C2%A9%20Eliseo&format=rss2 Search results for 'Provider:Universidad Gerardo Barrios and location:INI and su-to:PUBLICACIONES CIENTIFICAS and holdingbranch:UGB and su-to:PUBLICACIONES CIENTIFICAS and au:Villanueva Ortíz, José Eliseo' at Biblioteca UGB 0 20