<![CDATA[Biblioteca Univ. Surcolombiana Search for 'au:"Escobar Macualo, Freddy Humberto," and su-to:Ingenieria de yacimientos petroliferos']]> https://biblioteca.usco.edu.co//cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Escobar%20Macualo%2C%20Freddy%20Humberto%2C%22%20and%20su-to%3AIngenieria%20de%20yacimientos%20petroliferos&format=rss2 4 0 50