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Workshop on management of urban water services, Tampere 25.4.1991, 1993, pp. P. 6-40: 1 box, 14 fig., 15 tab.
J. A. Infante and de Mena, E.,
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R. M. Clark, Regli, S., and Hurst, C. J.,
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J. I. Morales-Reyes,
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World Bank -Washington, DC, US,
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