@article {, title = {Mapa geol{\'o}gico del cuadrangulo de Cailloma}, year = {1988}, publisher = {Instituto Geol{\'o}gico Minero y Metal{\'u}rgico}, address = {scale 1:100,000}, author = {Davila M. , David and Diaz H. , Guillermo and Montoya R. , Manuel} }