https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?q=ccl=an%3A251%20and%20holdingbranch%3AUGB%20and%20au%3AGonz%C3%83%C2%A1lez%20Murillo%2C%20Carlos%20Ernesto%20and%20location%3ATES%20and%20au%3AGonz%C3%83%C2%A1lez%20Murillo%2C%20Carlos%20Ernesto%20and%20au%3AHern%C3%83%C2%A1ndez%20Ulloa%2C%20Felipe%20Obdulio&format=rss2 Search results for 'an:251 and holdingbranch:UGB and au:González Murillo, Carlos Ernesto and location:TES and au:González Murillo, Carlos Ernesto and au:Hernández Ulloa, Felipe Obdulio' at Biblioteca UGB 0 20