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