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Workshop on management of information services, 9. - 21.5.1983, Njiro Hill, Arusha, Tanzania / ed. by Lutz Hüttemann.
- German foundation for international development,
- 1983.
- Bonn :
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Distance education for development : international seminar 13. - 15. September 1979, in Addis Ababa/Ethiopia : jointly organized by United Nations economic commission for Africa and German foundation for international development : report / Jan R. Hakemulder.
- German foundation for international development,
- 1979.
- Bonn :