https://catalogobiblioteca.ingemmet.gob.pe/cgi-bin/koha/opac-search.pl?q=ccl=an%3A%2255690%22%20and%20itype%3ABOLE%20and%20au%3AAguilar%20Contreras%2C%20Rigoberto&format=rss2 Search results for 'an:"55690" and itype:BOLE and au:Aguilar Contreras, Rigoberto' at Biblioteca - Ingemmet 0 20