TY  - RPRT
TI  - Digital map of the aquifer boundary for the High Plains aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming
AU  - Sharon Qi
PY  - 2010
DO  - 10.3133/ds543
UR  - https://pubs.usgs.gov/publication/ds543
ID  - ds543
ER  -