TY  - RPRT
TI  - Mineral resources of parts of the Departments of Antioquia and Caldas, Zone II, Colombia
AU  - R.B. Hall
AU  - Tomas Feininger
AU  - L. Barrero
AU  - Rico H. Dario
AU  - Hector
AU  - A. Alvarez
PY  - 1970
DO  - 10.3133/ofr70148
UR  - https://pubs.usgs.gov/publication/ofr70148
ID  - ofr70148
ER  -