TY  - GEN
AU  - 
AU  - Nielsen, D.R., ed.
AU  - MacDonald, J.G., ed.
TI  - Nitrogen in the environment
PY  - 1978///
CY  - New York
PB  - Academic Press
KW  - Nitrogen Cycle
KW  - Nitrogen
KW  - Environment
KW  - Soil
N1  - Vol. 1 : Nitrogen behaviour in field soil
ER  -