TY - RPRT TI - Chemical and isotopic evidence of nitrogen transformation in the Mississippi River, 1997-98 AU - William A. Battaglin AU - Carol Kendall AU - Cecily C.Y. Chang AU - Steven R. Silva AU - Donald H. Campbell PY - 2001 DO - 10.1002/hyp.214 UR - https://pubs.usgs.gov/publication/70243310 ID - 70243310 ER -