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<![CDATA[Biblioteca Univ. Surcolombiana Search for '(su,complete-subfield:{Lodos de perforacion}) AND (su,complete-subfield:{FluÃdos para perforaciÃ³n pozos petroleros})']]> https://biblioteca.usco.edu.co//cgi-bin/koha/opac-search.pl?q=ccl=%28su%2Ccomplete-subfield%3A%7BLodos%20de%20perforacion%7D%29%20AND%20%28su%2Ccomplete-subfield%3A%7BFlu%C3%83%C2%ADdos%20para%20perforaci%C3%83%C2%B3n%20pozos%20petroleros%7D%29&format=rss2 0 20