TY  - RPRT
TI  - A proposed national mineral-resource assessment - A plan to assess the nonfuel mineral resources of the United States and its public lands
AU  - R.B. McCammon
AU  - J.A. Briskey
PY  - 1992
DO  - 10.1007/bf01782691
UR  - https://pubs.usgs.gov/publication/70016340
ID  - 70016340
ER  -