TY - RPRT TI - Geologic map of eastern Antioquia Department, Colombia Quadrangle I-9, and parts of quadrangles H-9, H-10, I-10, J-9, and J-10 AU - Tomas Feininger AU - Dario Barrero AU - Nestor Castro AU - Octavio Ramirez AU - Hernando Lozano AU - Jairo Vesga PY - 1975 DO - 10.3133/i860 UR - https://pubs.usgs.gov/publication/i860 ID - i860 ER -