TY  - RPRT
TI  - Geologic map of Tertiary and uppermost Cretaceous rocks showing structure contours, oil and gas fields, dry holes, and mines in the southern part of Powder River basin, Converse, Niobrara, and Natrona Counties, Wyoming
AU  - N.M. Denson
AU  - G. H. Horn
PY  - 1972
DO  - 10.3133/ofr7288
UR  - https://pubs.usgs.gov/publication/ofr7288
ID  - ofr7288
ER  -