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<![CDATA[Biblioteca Univ. Surcolombiana Search for 'an:6741 and su-to:Campos petrolÃferos and au:Escobar Macualo, Freddy Humberto,']]> https://biblioteca.usco.edu.co//cgi-bin/koha/opac-search.pl?q=ccl=an%3A6741%20and%20su-to%3ACampos%20petrol%C3%83%C2%ADferos%20and%20au%3AEscobar%20Macualo%2C%20Freddy%20Humberto%2C&format=rss2 0 20