TY  - RPRT
TI  - Mineral resource potential of the NB-20-4 Quadrangle, eastern Guayana Shield, Bolivar State, Venezuela
AU  - Jeffrey C. Wynn
AU  - Gary B. Sidder
PY  - 1991
DO  - 10.3133/b1960
UR  - https://pubs.usgs.gov/publication/b1960
ID  - b1960
ER  -