TY  - BOOK
AU  - Nutman P S
TI  - Symbiotic nitrogen fixation in plants
SN  - 0-521-20645-6
U1  - 572.5452 
PY  - 1976///
CY  - Cambridge
PB  - C U P
KW  - Legumes
KW  - Nitrogen-fixation
KW  - Nitrogen-fixing microorganisms
KW  - Nitrogen-fixing plants
KW  - Symbiosis
ER  -