TY  - RPRT
TI  - Geologic map of the Gbanka Quadrangle, Liberia
AU  - E. R. Force
AU  - J.D.N. Dunbar
PY  - 1977
DO  - 10.3133/i776d
UR  - https://pubs.usgs.gov/publication/i776D
ID  - i776D
ER  -