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3
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Comparison of two types of sunflower seed oil extraction : report of practical training at the Institute of production innovation, University of Dar es Salaam, Tanzania / Jan Willem van Slijpe.
- Delft university of technology. Faculty of industrial design engineering [etc.],
- 1990.
- Delft :
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The widening gyre : the Tanzanian one-party state and policy towards rural cooperatives / Oda van Cranenburgh.
- Eburon,
- 1990.
- Delft :
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Aquatic ecology : between science and technology, and its role in development cooperation : inaugural lecture / by Wim van Vierssen.
- International institute for hydraulic and environmental engineering (IHE),
- 1990.
- Delft :