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<![CDATA[Biblioteca Univ. Surcolombiana Search for '(su,complete-subfield:{DiÃ³xido de nitrÃ³geno}) AND (su,complete-subfield:{toxicidad})']]> https://biblioteca.usco.edu.co//cgi-bin/koha/opac-search.pl?q=ccl=%28su%2Ccomplete-subfield%3A%7BDi%C3%83%C2%B3xido%20de%20nitr%C3%83%C2%B3geno%7D%29%20AND%20%28su%2Ccomplete-subfield%3A%7Btoxicidad%7D%29&format=rss2 0 20