TY  - BOOK
AU  - Subba Rao, N. S.,
TI  - Biological Nitrogen Fixation
SN  - 8120402650
U1  - 589.704133 
PY  - 1988///
CY  - New Delhi
PB  - Oxford & IBH Publishing Co. Pvt. Ltd.
KW  - Nitrogen Fixation
ER  -