TY - RPRT TI - Stratigraphic cross section O - O' showing electric logs of Upper Cretaceous and older rocks, Powder River Basin, Natrona, Converse, Campbell and Weston Counties, Wyoming AU - James E. Fox PY - 1987 DO - 10.3133/ofr86465o UR - https://pubs.usgs.gov/publication/ofr86465O ID - ofr86465O ER -