TY  - RPRT
TI  - Geology and mineral resource assessment of the Venezuelan Guayana Shield at 1:500,000 scale; a digital representation of maps published by the U.S. Geological Survey
AU  - Paul G. Schruben
AU  - J. C. Wynn
AU  - Floyd Gray
AU  - D. P. Cox
AU  - J.H. Sterwart
AU  - W. E. Brooks
PY  - 1997
DO  - 10.3133/ds46
UR  - https://pubs.usgs.gov/publication/ds46
ID  - ds46
ER  -