TY  - RPRT
TI  - Potash feldspar of possible economic value in the Barstow Formation, San Bernardino County, California
AU  - Richard A. Sheppard
AU  - Arthur J. Gude
PY  - 1965
DO  - 10.3133/cir500
UR  - https://pubs.usgs.gov/publication/cir500
ID  - cir500
ER  -