https://catalogobiblioteca.ingemmet.gob.pe/cgi-bin/koha/opac-search.pl?q=ccl=se%2Cphr%3A%22INGEMMET.%20Bolet%C3%83%C2%ADn.%20Serie%20B%3A%20Geolog%C3%83%C2%ADa%20Econ%C3%83%C2%B3mica%22%20and%20au%3ACarpio%20Ronquillo%2C%20Mario%20and%20se%3AINGEMMET.%20Bolet%C3%83%C2%ADn.%20Serie%20B%3A%20Geolog%C3%83%C2%ADa%20Econ%C3%83%C2%B3mica&format=rss2 Search results for 'se,phr:"INGEMMET. Boletín. Serie B: Geología Económica" and au:Carpio Ronquillo, Mario and se:INGEMMET. Boletín. Serie B: Geología Económica' at Biblioteca - Ingemmet 0 20