TY  - RPRT
TI  - Pesticides and nitrate in surficial sand and gravel aquifers as related to modeled contamination susceptibility in part of the Upper Mississippi River Basin
AU  - Paul E. Hanson
PY  - 1998
DO  - 10.3133/fs10798
UR  - https://pubs.usgs.gov/publication/fs10798
ID  - fs10798
ER  -