TY  - RPRT
TI  - Effects of watershed land use on nitrogen concentrations and δ 15 nitrogen in groundwater
AU  - Marci L. Cole
AU  - Kevin D. Kroeger
AU  - J.W. McClelland
AU  - I. Valiela
PY  - 2006
DO  - 10.1007/s10533-005-1036-2
UR  - https://pubs.usgs.gov/publication/70030779
ID  - 70030779
ER  -