TY  - RPRT
TI  - A digital geologic map database for the state of Oklahoma
AU  - William D. Heran
AU  - Gregory N. Green
AU  - Douglas B. Stoeser
PY  - 2003
DO  - 10.3133/ofr03247
UR  - https://pubs.usgs.gov/publication/ofr03247
ID  - ofr03247
ER  -