<![CDATA[Biblioteca UGB Search for 'an:"5799" and su-to:TESIS and au:Calderón, Xiomara Patricia and au:Calderón, Xiomara Patricia and au:González Murillo, Carlos Ernesto']]> https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?q=ccl=an%3A%225799%22%20and%20su-to%3ATESIS%20and%20au%3ACalder%C3%83%C2%B3n%2C%20Xiomara%20Patricia%20and%20au%3ACalder%C3%83%C2%B3n%2C%20Xiomara%20Patricia%20and%20au%3AGonz%C3%83%C2%A1lez%20Murillo%2C%20Carlos%20Ernesto&format=rss2 0 20