Biological nitrogen fixation in farming systems of the Tropics - Ayanaba, A.; Dart, P. J. (Chichester ; 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; Agriculture -- Congresses; Cropping systems -- Congresses