TY  - RPRT
TI  - Preliminary biostratigraphic map, Colyear Springs quadrangle, California
AU  - D. L. Jones
AU  - E. H. Bailey
PY  - 1973
DO  - 10.3133/mf517
UR  - https://pubs.usgs.gov/publication/mf517
ID  - mf517
ER  -