TY  - RPRT
TI  - Preliminary geologic map of the Beckton Quadrangle, Sheridan County, Wyoming
AU  - E. N. Hinrichs
PY  - 1980
DO  - 10.3133/mf1218
UR  - https://pubs.usgs.gov/publication/mf1218
ID  - mf1218
ER  -