TY - RPRT TI - Nitrification in the Upper Mississippi River: Patterns, controls, and contribution to the NO3- budget AU - E.A. Strauss AU - W. B. Richardson AU - L.A. Bartsch AU - J.C. Cavanaugh AU - D.A. Bruesewitz AU - H. Imker AU - J.A. Heinz AU - D.M. Soballe PY - 2004 DO - 10.1899/0887-3593(2004)023<0001:nitumr>2.0.co;2 UR - https://pubs.usgs.gov/publication/70027516 ID - 70027516 ER -