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<![CDATA[Biblioteca Univ. Surcolombiana Search for '(su,complete-subfield:{Pozos Petroleros}) AND (su,complete-subfield:{Fracturamiento hidrÃ¡ulico })']]> https://biblioteca.usco.edu.co//cgi-bin/koha/opac-search.pl?q=ccl=%28su%2Ccomplete-subfield%3A%7BPozos%20Petroleros%7D%29%20AND%20%28su%2Ccomplete-subfield%3A%7BFracturamiento%20hidr%C3%83%C2%A1ulico%20%7D%29&format=rss2 0 20