TY  - RPRT
TI  - Geologic map of the Yarumal Quadrangle (H-8) and part of the Ituango Quadrangle (H-7), Colombia
AU  - Alvarez A. Jairo
AU  - Rico H. Hector
AU  - Hernan Vasquez
PY  - 1975
DO  - 10.3133/i842
UR  - https://pubs.usgs.gov/publication/i842
ID  - i842
ER  -