TY  - RPRT
TI  - Preliminary maps and reports released by the Geologic Division and the Conservation Division, 1948
AU  - Ruth A. Atherton
AU  - Jane Titcomb
AU  - R.E. Spratt
PY  - 1949
DO  - 10.3133/cir64
UR  - https://pubs.usgs.gov/publication/cir64
ID  - cir64
ER  -