TY  - RPRT
TI  - Mineral resources of the Kofa Unit 4 North Wilderness Study Area, Yuma County, Arizona
AU  - David R. Sherrod
AU  - D. B. Smith
AU  - M. D. Kleinkopf
AU  - D. D. Gese
PY  - 1990
DO  - 10.3133/b1702k
UR  - https://pubs.usgs.gov/publication/b1702K
ID  - b1702K
ER  -