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<![CDATA[Biblioteca Univ. Surcolombiana Search for 'Provider:McGraw Hill and au:Orizaga Samperio, Jorge and au:Schwartz, Seymour I. and au:Billiar, Timothy R. and su-to:Cirugï¿½ï¿½a']]> https://biblioteca.usco.edu.co//cgi-bin/koha/opac-search.pl?q=ccl=Provider%3AMcGraw%20Hill%20and%20au%3AOrizaga%20Samperio%2C%20Jorge%20and%20au%3ASchwartz%2C%20Seymour%20I.%20and%20au%3ABilliar%2C%20Timothy%20R.%20and%20su-to%3ACirug%C3%AF%C2%BF%C2%BD%C3%AF%C2%BF%C2%BDa&format=rss2 0 20