TY  - RPRT
TI  - Thickness of Upper Cretaceous Lewis Shale, Powder River basin, Wyoming and Montana
AU  - James E. Fox
AU  - Debra K. Higley
PY  - 1987
DO  - 10.3133/ofr87340b
UR  - https://pubs.usgs.gov/publication/ofr87340B
ID  - ofr87340B
ER  -