TY  - BOOK
AU  - Rao, N. S. subba.
TI  - Recent advances in biological nitrogen fixation
SN  - 0713127791
U1  - 581.133 
PY  - 1980///
CY  - London
PB  - Edward arnold
KW  - Nitrogen--Fixation 	
KW  - Nitrogen-fixing microorganisms
ER  -