<![CDATA[Biblioteca Univ. Surcolombiana Search for '(su,complete-subfield:{Petróleo}) AND (su,complete-subfield:{Técnica flujo cruzado})']]> https://biblioteca.usco.edu.co//cgi-bin/koha/opac-search.pl?q=ccl=%28su%2Ccomplete-subfield%3A%7BPetr%C3%83%C2%B3leo%7D%29%20AND%20%28su%2Ccomplete-subfield%3A%7BT%C3%83%C2%A9cnica%20flujo%20cruzado%7D%29&format=rss2 0 20