Biological nitrogen fixation in farming systems of the Tropics - Ayanaba, A.; Dart, P. J.; International Institute of Tropical Agriculture (Chichester ; New York : Wiley, 1977)
"Based on papers presented at a symposium held at the International Institute of Tropical Agriculture, Ibadan, Nigeria, in October 1975."
"A Wiley-Interscience publication."
Keywords: Nitrogen -- Fixation -- Congresses; Agricultura; Agriculture -- Tropics -- Congresses; Cropping systems -- Tropics -- Congresses