TY  - BOOK
AU  - Ayanaba,A.
AU  - Dart P.J.
ED  - Symposium on Biological Nitrogen Fixation in Farming Systems of the Tropics
TI  - Biological nitrogen fixation in farming systems of the tropics
SN  - 0471994995
U1  - 630.913 
PY  - 1977///
CY  - Chichester
PB  - John Wiley and sons
KW  - Agriculture
KW  - Tropics
KW  - Congresses
KW  - Nitrogen fixation
N1  - Includes index
ER  -