http://biblioteca1.aunar.edu.co/cgi-bin/koha/opac-search.pl?q=ccl=au%3A%22Ram%C3%B3n%20Heredia%20Jerez%22&format=rss2 Search results for 'au:"Ramón Heredia Jerez"' at Biblioteca Zambrano Bucheli AUNAR 0 20