TY  - BOOK
AU  - Stewart, W.D.P.
TI  - Nitrogen fixation by free living micro-organisms
SN  - 0521207088
U1  - 589.7 
PY  - 1975///
CY  - London
PB  - Cambridge University Press
KW  - Botanical sciences
KW  - Pure Sciences
KW  - Nitrogen fixation
ER  -