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<![CDATA[Biblioteca Univ. Surcolombiana Search for '(su,complete-subfield:{Pozos de petrÃ³leo - perforaciÃ³n }) AND (su,complete-subfield:{Pozos verticales de black oil})']]> https://biblioteca.usco.edu.co//cgi-bin/koha/opac-search.pl?q=ccl=%28su%2Ccomplete-subfield%3A%7BPozos%20de%20petr%C3%83%C2%B3leo%20-%20perforaci%C3%83%C2%B3n%20%7D%29%20AND%20%28su%2Ccomplete-subfield%3A%7BPozos%20verticales%20de%20black%20oil%7D%29&format=rss2 0 20