TY  - RPRT
TI  - Geographic map of the Zorzor Quadrangle, Liberia
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
AU  - Liberian Geological Survey
PY  - 1972
DO  - 10.3133/i773a
UR  - https://pubs.usgs.gov/publication/i773A
ID  - i773A
ER  -