TY  - BOOK
AU  - A. Ayanaba
AU  -  P. J. Dart, 
TI  - Biological nitrogen fixation in farming systems of the tropics
SN  - 0-471-99499-5
U1  - 589.9506 
PY  - 1977///
CY  - New York
PB  - John Wiley and Sons
N1  - A. Ayanaba & P. J. Dart: Biological nitrogen fixation in farming systems of the tropics.  New York.  John Wiley and Sons, 1977. 0-471-99499-5--(589.9506AYA)
ER  -