TY  - GEN
AU  - Kulasooriya , S.A.
TI  - Biological nitrogen fixation: fundamentals and utilization
SN  - 9789555891080
U1  - 572.545 
PY  - 2008///
CY  - Peradeniya
PB  - Science Education 
KW  - BIOCHEMICAL GENETICS
ER  -