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2
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Regional co-operation in development research and training / [contrib. by Francisco Delich...et al.].
- 803.1
- OECD. Development centre,
- 1981.
- Paris :
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Analysis of experiences of self-help and public participation in rural water supplies : the case of Mexico / by Francisco Leon de la Barra Rowland.
- 874
- OECD. Development centre,
- 1978.
- Paris :