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2
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Birds of a feather flock together : the change agent's influencing and informative role in the diffusion process : a minor field study / Christina Dahlman, Lena Magnusson.
- Swedish university of agricultural sciences. IRDC,
- 1995.
- Uppsala :
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A survey of workers' education activities in Zimbabwe, 1900-1981 / Meshack Jongilanga Matshazi, Christina Tillfors.
- 865.42
- Scandinavian institute of African studies,
- 1983.
- Uppsala :