- International Crops Research Institute for the Semi-Arid Tropics (3)
- Bengtson, G. D. (1)
- Frederiksen, R. A. (1)
- House, Leland Ralph, 1929- (1)
- International Crops Research Institute for the Semi-arid Tropics (1)
- International Workshop : Dynamics of Roots and Nitrogen in Cropping Systems of the Semi-Arid Tropics (1)
- International Workshop on Groundnuts (1)
- Ito, Osamu (1)
- Mughogho, L. K. (1)
- Williams, R. J. (1)
- 農林水産省国際農林水産業研究センター (1)