TY - RPRT TI - Stratigraphic cross section F - F' showing electric logs of Upper Cretaceous and older rocks, Powder River Basin, Johnson, Sheridan, Campbell, and Crook Counties, Wyoming AU - James E. Fox PY - 1986 DO - 10.3133/ofr86465f UR - https://pubs.usgs.gov/publication/ofr86465F ID - ofr86465F ER -