TY  - RPRT
TI  - δ 15 N constraints on long-term nitrogen balances in temperate forests
AU  - S.S. Perakis
AU  - E.R. Sinkhorn
AU  - J.E. Compton
PY  - 2011
DO  - 10.1007/s00442-011-2016-y
UR  - https://pubs.usgs.gov/publication/70034567
ID  - 70034567
ER  -