TY  - RPRT
TI  - The quality of our Nation's waters: Water quality in principal aquifers of the United States, 1991-2010
AU  - Leslie A. DeSimone
AU  - Peter B. McMahon
AU  - Michael R. Rosen
PY  - 2015
DO  - 10.3133/cir1360
UR  - https://pubs.usgs.gov/publication/cir1360
ID  - cir1360
ER  -