TY  - RPRT
TI  - Digital spatial data for predicted nitrate and arsenic concentrations in basin-fill aquifers of the Southwest Principal Aquifers study area
AU  - Tim S. McKinney
AU  - David W. Anning
PY  - 2012
DO  - 10.3133/ds698
UR  - https://pubs.usgs.gov/publication/ds698
ID  - ds698
ER  -