TY  - RPRT
TI  - Petrographic characteristics of the Wyodak-Anderson coal bed (Paleocene), Powder River Basin, Wyoming, U.S.A.
AU  - Peter D. Warwick
AU  - Ronald W. Stanton
PY  - 1988
DO  - 10.1016/0146-6380(88)90012-5
UR  - https://pubs.usgs.gov/publication/70014396
ID  - 70014396
ER  -