TY  - RPRT
TI  - Geologic and structure map of the southern part of the Powder River basin, Converse, Niobrara, and Natrona counties, Wyoming
AU  - G. H. Horn
PY  - 1975
DO  - 10.3133/i877
UR  - https://pubs.usgs.gov/publication/i877
ID  - i877
ER  -