TY  - JOUR
AU  - Seitzinger, Sybil
TI  - Nitrogen cycle: Out of reach
JA  - 
PY  - 2008/03/13/print
VL  - 452
IS  - 7184
SP  - 162
EP  - 163
PB  - Nature Publishing Group
SN  - 0028-0836
UR  - http://dx.doi.org/10.1038/452162a
M3  - 10.1038/452162a
N1  - 10.1038/452162a
ER  -