TY  - RPRT
TI  - Pre-Pennsylvanian geology of southwestern Kansas, southeastern Colorado, and the Oklahoma Panhandle
AU  - John Charles Maher
AU  - Jack B. Collins
PY  - 1949
DO  - 10.3133/om101
UR  - https://pubs.usgs.gov/publication/om101
ID  - om101
ER  -