@misc{indiciae42f78d43961c, title = {Stratigraphic diagrams with electric logs of Upper Cretaceous rocks, Powder River basin, Johnson, Campbell and Crook Counties, Wyoming Section A-A'}, author = {E.A. Merewether and W. A. Cobban and R.M. Matson and W.J. Magathan}, year = {1977}, doi = {10.3133/oc73}, url = {https://pubs.usgs.gov/publication/oc73}, note = {Source identifier: oc73} }