Mineral resource potential of the NB-20-4 Quadrangle, Eastern Guayana Shield, Bolívar State, Venezuela /
Wynn, Jeffrey C.
Sidder, Gary B.
Geological Survey (U.S.)
[Reston, Va.?] : U.S. Dept. of the Interior, U.S. Geological Survey ; Denver, CO : For sale by the Books and Open-File Reports Section,
1991.
Shipping list no.: 92-150-P.
Two maps on 2 folded leaves in pocket.
Includes bibliographical references (p. 14-16).
Mines and mineral resources
Geology