TY - RPRT TI - Nitrogen fluxes through unsaturated zones in five agricultural settings across the United States AU - C.T. Green AU - L.H. Fisher AU - B.A. Bekins PY - 2008 DO - 10.2134/jeq2007.0010 UR - https://pubs.usgs.gov/publication/70032096 ID - 70032096 ER -