TY  - RPRT
TI  - Digital map of base of aquifer for High Plains Aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming
AU  - Joel R. Cederstrand
AU  - Mark F. Becker
PY  - 1998
DO  - 10.3133/ofr98393
UR  - https://pubs.usgs.gov/publication/ofr98393
ID  - ofr98393
ER  -