https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?q=ccl=an%3A%225870%22%20and%20au%3AAldana%20Revelo%2C%20Miriam%20Gerardine%20and%20su-to%3ATESIS%20and%20holdingbranch%3AUSU%20and%20au%3AOrdo%C3%83%C2%B1ez%20Castell%C3%83%C2%B3n%2C%20Liliana%20Yamileth&format=rss2 Search results for 'an:"5870" and au:Aldana Revelo, Miriam Gerardine and su-to:TESIS and holdingbranch:USU and au:Ordoñez Castellón, Liliana Yamileth' at Biblioteca UGB 0 20