TY  - RPRT
TI  - Opportunities for a platinum-group-element resource appraisal of the United States
AU  - Michael L. Zientek
AU  - G.H. Alcott
AU  - N.J. Page
AU  - W. D. Menzie
PY  - 1988
DO  - 10.3133/ofr88254
UR  - https://pubs.usgs.gov/publication/ofr88254
ID  - ofr88254
ER  -