TY  - RPRT
TI  - Secondary hydrogeologic regions of the conterminous United States
AU  - Kenneth Belitz
AU  - Elise Watson
AU  - Tyler D. Johnson
AU  - Jennifer B. Sharpe
PY  - 2018
DO  - 10.1111/gwat.12806
UR  - https://pubs.usgs.gov/publication/70198156
ID  - 70198156
ER  -