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<![CDATA[Biblioteca Univ. Surcolombiana Search for '(su,complete-subfield:{Reservas de petroleo}) AND (su,complete-subfield:{Modelos matemÃ¡ticos})']]> https://biblioteca.usco.edu.co//cgi-bin/koha/opac-search.pl?q=ccl=%28su%2Ccomplete-subfield%3A%7BReservas%20de%20petroleo%7D%29%20AND%20%28su%2Ccomplete-subfield%3A%7BModelos%20matem%C3%83%C2%A1ticos%7D%29&format=rss2 0 20