TY  - BOOK
AU  - Nielsen,D.R.
AU  - MacDonald,J.G.
TI  - Nitrogen in the environment. Vol 2
U1  - 547.04 
PY  - 1978///
CY  - N.Y.
PB  - A.P.
KW  - Chemistry and Allied Sci
KW  - Chemistry and Allied Science
ER  -