TY  - RPRT
TI  - Subsurface cross sections of pre-Pennsylvanian rocks from Morton County, Kansas, to Gray County, Texas
AU  - J.B. Collins
PY  - 1952
DO  - 10.3133/oc47
UR  - https://pubs.usgs.gov/publication/oc47
ID  - oc47
ER  -