TY - RPRT TI - Stratigraphic cross section J - J' showing electric logs of Upper Cretaceous and older rocks, Powder River Basin, Johnson, Campbell, and Crook Counties, Wyoming AU - James E. Fox PY - 1987 DO - 10.3133/ofr86465j UR - https://pubs.usgs.gov/publication/ofr86465J ID - ofr86465J ER -