1. ApproTEC, PO Box 64142, Nairobi, Kenya. Tel/Fax: 783046, 787380/1, 796278. approtec@nbnet.co.ke
2. International Rice Research Institute, PO Box 933, Manila, Philippines.
3. Intermediate Technology-Zimbabwe, PO Box 1744, Harare. Tel.: 263-4-496745/6. Fax: 263-4-496041. itdg@harare.iafrica.com
4. Rural Industries Innovation Centre, Private Bag 11, Kanye, Botswana, Tel.: 340392. Fax: 340642.
5. Processing Tropical Crops;Asiedu,1989