TY  - RPRT
TI  - Analysis of nitrate in near-surface aquifers in the midcontinental United States: An application of the inverse hyperbolic sine Tobit model
AU  - Steven T. Yen
AU  - Shiping Liu
AU  - Dana W. Kolpin
PY  - 1996
DO  - 10.1029/96wr02102
UR  - https://pubs.usgs.gov/publication/70018204
ID  - 70018204
ER  -