https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?q=ccl=Provider%3ACengage%20Learning%20Editores%20and%20au%3ATorres%20Flores%2C%20Jes%C3%83%C2%BAs%20Miguel%20and%20au%3ATorres%20Flores%2C%20Jes%C3%83%C2%BAs%20Miguel&format=rss2 Search results for 'Provider:Cengage Learning Editores and au:Torres Flores, Jesús Miguel and au:Torres Flores, Jesús Miguel' at Biblioteca UGB 0 20