TY  - RPRT
TI  - Herbicide and nitrate variation in alluvium underlying a cornfield at a site in Iowa County, Iowa
AU  - S. J. Kalkhoff
AU  - M.G. Detroy
AU  - K. Cherryholmes
AU  - R.L. Kuzniar
PY  - 2007
DO  - 10.1111/j.1752-1688.1992.tb04012.x
UR  - https://pubs.usgs.gov/publication/70169037
ID  - 70169037
ER  -