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2
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Programme on exchange and transfer of information (POETRI) / [contrib. by Peter Vickers...et al.].
- International reference centre for community water supply and sanitation (IRC),
- 1981.
- Rijswijk :
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Small community water supplies : technology of small water supply systems in developing countries / prep. with contrib. from and under the joint supervision of L. Huisman...[et al.] ; comp. and ed. by E.H. Hofkes.
- International reference centre for community water supply and sanitation (IRC),
- 1981.
- Rijswijk :