Author Wynn, Jeffrey C
Title Mineral resource potential of the NB-20-4 Quadrangle, Eastern Guayana Shield, Bolívar State, Venezuela / by Jeffrey C. Wynn and Gary B. Sidder
Imprint Washington : U.S. G.P.O., 1991
Descript iii, 16 p. : ill. (some col.) ; 29 cm
Series U.S. Geological Survey bulletin ; 1960
Note 2 maps in pocket
Includes bibliographical references
Subject Mines and mineral resources -- Venezuela -- Bolívar (State)
Geology -- Venezuela -- Bolívar (State)
Alt Author Sidder, Gary B
Alt Title Guayana Shield, Bolívar State, Venezuela
Govt. Doc# I 19.3:1960