TY  - RPRT
TI  - Preliminary charts of selected structure & thickness maps and diagrams from the Powder River Basin, Wyoming & Montana
AU  - J. E. Fox
AU  - L. A. McGrath
PY  - 1986
DO  - 10.3133/ofr86385
UR  - https://pubs.usgs.gov/publication/ofr86385
ID  - ofr86385
ER  -