TY  - RPRT
TI  - Total-count gamma radiation map of the Zwedru quadrangle, Liberia
AU  - Cletus S. Wotorson
AU  - John Charles Behrendt
PY  - 1971
DO  - 10.3133/ofr71332
UR  - https://pubs.usgs.gov/publication/ofr71332
ID  - ofr71332
ER  -