TY  - RPRT
TI  - Introduction. Stratigraphy and coal beds of the Indiana coal field. The Washburne lignite field, North Dakota. The Fort Berthold Indian Reservation lignite field, North Dakota. The Fort Peck Indian Reservation lignite field, Montana. The central part of the Bull Mountain coal field, Montana. The Milk River coal field, Montana. Notes on the coals of the Custer National Forest, Montana
AU  - M. R. Campbell
AU  - George H. Ashley
AU  - Carl D. Smith
AU  - R. W. Richards
AU  - L.J. Pepperberg
AU  - Carroll H. Wegemann
PY  - 1910
DO  - 10.3133/b381a
UR  - https://pubs.usgs.gov/publication/b381A
ID  - b381A
ER  -