Biological nitrogen fixation in farming systems of the Tropics

Ngā tūemi rite

• Biological nitrogen fixation in farming systems of the Tropics : based on papers presented at a symposium held at the International Institute of Tropical Agriculture, Ibadan, Nigeria, in October 1975 /
  I whakaputaina: (1977)
• Nitrogen fixation in tropical cropping systems /
  mā: Giller, K. E.
  I whakaputaina: (1991)
• Biological nitrogen fixation and sustainability of tropical agriculture : proceedings of the Fourth International Conference of the African Association for Biological Nitrogen Fixation (AABNF), held at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, 24-28 September 1990 /
  I whakaputaina: (1992)
• Nitrogen management in farming systems in humid and subhumid tropics/
  I whakaputaina: (1985)
• Limitations and potentials for biological nitrogen fixation in the tropics : [proceedings of a conference on limitations and potentials for biological nitrogen foxation in the tropics, held in Brasilia, Braxil, July 18-22, 1977] /
  I whakaputaina: (1978)