TY  - RPRT
TI  - Bishop ash: A widespread volcanic ash extended to southern California
AU  - Richard Merriam
AU  - James L. Bischoff
PY  - 1975
DO  - 10.1306/212f6d07-2b24-11d7-8648000102c1865d
UR  - https://pubs.usgs.gov/publication/70231540
ID  - 70231540
ER  -