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Appropriate industrial technology for low-cost transport for rural areas / [contrib. by I.J. Barwell...et al.].
- United Nations,
- 1979.
- New York, NY :
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Conceptual and policy framework for a appropriate industrial technology / [contrib. by J. Tinbergen...et al.].
- United Nations,
- 1979.
- New York, NY :
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Appropriate industrial technology for textiles / [contrib. by J. Pickett...et al.].
- United Nations,
- 1979.
- New York, NY :