https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?q=ccl=Provider%3AUniversidad%20Gerardo%20Barrios%20and%20holdingbranch%3AUGB%20and%20holdingbranch%3AUSU%20and%20itype%3ABK%20and%20holdingbranch%3AUGB%20and%20au%3AC%C3%83%C2%A1rdenas%20Mart%C3%83%C2%ADnez%2C%20Joaqu%C3%83%C2%ADn%20Am%C3%83%C2%ADlcar&format=rss2 Search results for 'Provider:Universidad Gerardo Barrios and holdingbranch:UGB and holdingbranch:USU and itype:BK and holdingbranch:UGB and au:Cárdenas Martínez, Joaquín Amílcar' at Biblioteca UGB 0 20