TY  - RPRT
TI  - Geology and nonfuel mineral deposits of the United States
AU  - Michael L. Zientek
AU  - Greta J. Orris
PY  - 2005
DO  - 10.3133/ofr20051294a
UR  - https://pubs.usgs.gov/publication/ofr20051294A
ID  - ofr20051294A
ER  -