TY  - GEN
AU  - Nutman, P S
TI  - Symbiotic Nitrogen fixation in plants
T2  -  7
SN  - 0 521 20645 6
U1  - 581.1335 NUT 
CY  - Cambridge, Cambridge University Press
KW  - Nitrogen fixation -symbiotic / taxonomy /legumes -nitrogen fixation
ER  -