https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?q=ccl=Provider%3ATrillas%20and%20au%3AGarc%C3%83%C2%ADa%20Ram%C3%83%C2%ADrez%2C%20Olegario&format=rss2 Search results for 'Provider:Trillas and au:García Ramírez, Olegario' at Biblioteca UGB 0 20