TY  - RPRT
TI  - Hydrogeology and subsurface nitrate in the Upper Big Blue Natural Resources District, central Nebraska, July 1995 through September 1997
AU  - Ingrid M. Verstraeten
AU  - Virginia L. McGuire
AU  - K. L. Heckman
PY  - 1998
DO  - 10.3133/wri984207
UR  - https://pubs.usgs.gov/publication/wri984207
ID  - wri984207
ER  -