https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?q=ccl=Provider%3AM%C3%83%C2%A9dica%20Panamericana%20and%20holdingbranch%3AUSU%20and%20au%3AMalag%C3%83%C2%B3n-Londo%C3%83%C2%B1o%2C%20Gustavo&format=rss2 Search results for 'Provider:Médica Panamericana and holdingbranch:USU and au:Malagón-Londoño, Gustavo' at Biblioteca UGB 0 20