TY  - RPRT
TI  - The stratigraphy of the Montana group, with special reference to the position and age of the Judith River Formation in north-central Montana
AU  - C. F. Bowen
PY  - 1915
DO  - 10.3133/pp90i
UR  - https://pubs.usgs.gov/publication/pp90I
ID  - pp90I
ER  -