TY  - RPRT
TI  - Assessment of undiscovered deposits of gold, silver, copper, lead, and zinc in the United States: A Portable Document (PDF) recompilation of USGS Open-File Report 96-96 and Circular 1178
AU  - The U.S. Geological Survey National Mineral Resource Assessment Team
PY  - 2002
DO  - 10.3133/ofr2002198
UR  - https://pubs.usgs.gov/publication/ofr2002198
ID  - ofr2002198
ER  -