https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?idx=an%2Cphr&q=5808%26limit%3Davailable%26limit%3Dau%3ARivas%20Rodr%C3%83%C2%ADguez%2C%20Luis%20Humberto%26limit%3Dau%3AFlores%20Carri%C3%83%C2%B3n%2C%20Carlos%20Antonio&format=rss2 Search results for 'an,phr: 5808&limit=available&limit=au:Rivas Rodríguez, Luis Humberto&limit=au:Flores Carrión, Carlos Antonio' at Biblioteca UGB 0 20