TY  - GEN
AU  - Nutman, P S
TI  - Symbiotic nitrogen fixation in plants
T2  - 7
SN  - 0 521 20645 6
U1  - 581.1335 NUT;1 
CY  - Cambridge, Cambridge University Press
KW  - Symbiosis/ Nitrogen fixation- Symbiotic/ Nitrogen fixation- Genetics
ER  -