TY  - RPRT
TI  - Do ungulates accelerate or decelerate nitrogen cycling?
AU  - F. J. Singer
AU  - K.A. Schoenecker
PY  - 2003
DO  - 10.1016/s0378-1127(03)00133-6
UR  - https://pubs.usgs.gov/publication/1015112
ID  - 1015112
ER  -