TY  - RPRT
TI  - U.S. Geological Survey Mineral Resources Program - Science Supporting Mineral Resource Stewardship
AU  - S.J. Kropschot
PY  - 2007
DO  - 10.3133/fs20073035
UR  - https://pubs.usgs.gov/publication/fs20073035
ID  - fs20073035
ER  -