TY  - RPRT
TI  - Grayhouse area, Amador County, California
AU  - G.R. Heyl
AU  - M.H. Staatz
PY  - 1946
DO  - 10.3133/ofr4624
UR  - https://pubs.usgs.gov/publication/ofr4624
ID  - ofr4624
ER  -