http://koha.unicoc.edu.co/cgi-bin/koha/opac-search.pl?q=ccl=%28su%3A%7BColombia%7D%29%20AND%20%28su%3A%7BLey%20600%20de%202000%20%28julio%2024%29%7D%29&format=rss2 Search results for '(su:{Colombia}) AND (su:{Ley 600 de 2000 (julio 24)})' at SIBU - SISTEMAS DE BIBLIOTECAS UNICOC 0 20