TY - RPRT TI - A comparison of models for estimating the riverine export of nitrogen from large watersheds AU - R. B. Alexander AU - P.J. Johnes AU - E.W. Boyer AU - R. A. Smith PY - 2002 DO - 10.1023/a:1015752801818 UR - https://pubs.usgs.gov/publication/70024372 ID - 70024372 ER -