TY  - RPRT
TI  - Bedrock geology, altitude of base, and 1980 saturated thickness of the high plains aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming
AU  - John B. Weeks
AU  - Edwin D. Gutentag
PY  - 1981
DO  - 10.3133/ha648
UR  - https://pubs.usgs.gov/publication/ha648
ID  - ha648
ER  -