TY  - RPRT
TI  - Rough Diamond crystal mine and the Calaveras crystal mine, Calaveras County, California
AU  - Cordell Durrell
AU  - Thomas P. Thayer
PY  - 1943
DO  - 10.3133/ofr4381
UR  - https://pubs.usgs.gov/publication/ofr4381
ID  - ofr4381
ER  -