TY  - RPRT
TI  - Total-count gamma radiation map of the Harper quadrangle, Liberia
AU  - John Charles Behrendt
AU  - Cletus S. Wotorson
PY  - 1971
DO  - 10.3133/ofr7132
UR  - https://pubs.usgs.gov/publication/ofr7132
ID  - ofr7132
ER  -