TY - RPRT TI - Hydrogeologic controls on nitrate transport in a small agricultural catchment, Iowa AU - K. E. Schilling AU - M.D. Tomer AU - Y.-K. Zhang AU - T. Weisbrod AU - P. Jacobson AU - C.A. Cambardella PY - 2007 DO - 10.1029/2007jg000405 UR - https://pubs.usgs.gov/publication/70031704 ID - 70031704 ER -