TY  - RPRT
TI  - Geology and mineral resource assessment of the Venezuelan Guayana Shield
AU  - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey
AU  - Corporacion Venezolana de Guayana.
PY  - 1993
DO  - 10.3133/b2062
UR  - https://pubs.usgs.gov/publication/b2062
ID  - b2062
ER  -