TY  - BOOK
AU  - Broughton,W.J.
TI  - Nitrogen fixation
U1  - 589 
PY  - 1981///-<1983 >
CY  - Oxford, New York
PB  - Clarendon Press, Oxford University Press
KW  - Nitrogen-fixing microorganisms
KW  - Nitrogen
KW  - Fixation
N1  - Contents: v. 1. Ecology.--v. 2. Rhizobium.--v. 3 Legumes
ER  -