TY  - RPRT
TI  - Geology of the Harper Quadrangle, Liberia
AU  - M. R. Brock
AU  - A.H. Chidester
AU  - M.G.W. Baker
PY  - 1974
DO  - 10.3133/ofr74310
UR  - https://pubs.usgs.gov/publication/ofr74310
ID  - ofr74310
ER  -