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The evaluation of agricultural projects : a study of some economic and financial aspects / prep. by Herman G. van der Tak.
- International bank for reconstruction and development. Economic department [etc.],
- 1964.
- [New York, NY] :
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Economic aspects of water utilization in irrigation projects / prep. by Herman G. van der Tak, Jochen K. Schmedtje.
- International bank for reconstruction and development. Economic department [etc.],
- 1965.
- [New York, NY] :