TY  - RPRT
TI  - Thickness of Lower Cretaceous rocks, Powder River basin, Wyoming and Montana
AU  - J. E. Fox
AU  - Debra K. Higley
PY  - 1987
DO  - 10.3133/ofr87340p
UR  - https://pubs.usgs.gov/publication/ofr87340P
ID  - ofr87340P
ER  -