https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?q=ccl=Provider%3AEditorial%20Universidad%20Gerardo%20Barrios%20and%20location%3AGEN%20and%20su-to%3ACONSTRUCCI%C3%83%C2%93N%20and%20su-to%3AINGENIERIA%20CIVIL&format=rss2 Search results for 'Provider:Editorial Universidad Gerardo Barrios and location:GEN and su-to:CONSTRUCCIÓN and su-to:INGENIERIA CIVIL' at Biblioteca UGB 0 20