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<![CDATA[Biblioteca UGB Search for 'an:757 and itype:TESIS and au:Pacheco ChÃ¡vez, HÃ©ctor Mauricio and au:Rivera de Yanes, Mercedes ConcepciÃ³n']]> https://biblioteca.ugb.edu.sv/cgi-bin/koha/opac-search.pl?q=ccl=an%3A757%20and%20itype%3ATESIS%20and%20au%3APacheco%20Ch%C3%83%C2%A1vez%2C%20H%C3%83%C2%A9ctor%20Mauricio%20and%20au%3ARivera%20de%20Yanes%2C%20Mercedes%20Concepci%C3%83%C2%B3n&format=rss2 Search results for 'an:757 and itype:TESIS and au:Pacheco ChÃ¡vez, HÃ©ctor Mauricio and au:Rivera de Yanes, Mercedes ConcepciÃ³n' at Biblioteca UGB 0 20