Geology and mineral resource assessment of the Venezuelan Guayana Shield /
Geological Survey (U.S.)
Corporación Venezolana de Guayana.Técnica Minera.
Washington : U.S. G.P.O. ; Denver, CO : For sale by USGS Map Distribution,
1993.
Issued in portfolio.
Includes bibliographical references (p. 92-98).
Geology
Minerals