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Z. A. C. S. I. R. - Pretoria and ZA, S. Africa. De,
Implementing prepayment water metering systems. Pretoria, South Africa: South Africa, Department of Water Affairs and Forestry, 1997, p. x, 59 p. : 8 fig., 6 tab.
S. M. Kayaga,
Marketing of watsan services : NWSC Uganda. Loughborough, UK: Water, Engineering and Development Centre, Loughborough University of Technology, WEDC, 1997, p. xiii, 150 p. : fig., tab.
N. L. D. H. V. - Amersfoort, Arnhem, N. L. Euroconsul, YE, Y. Ministry o, and Maarssenbroek, N. L. Agro Visio,
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C. D. van der Wildt, Wegelin-Schuringa, M. H. A., and M. Aroosi, A.,
“Rada Water Supply and Sanitation Project Republic of Yemen : report of the seventh monitoring mission, 16-24 February 1997 : final report”. Netherlands, Ministry of Foreign Affairs, DGIS, The Hague, The Netherlands, p. iii, 30 p., 1997.
C. Yniguez and McIntosh, A. C.,
Second water utilities data book : Asia and Pacific region, 2nd ed.nd ed. Manila, Philippines: Asian Development Bank, 1997, p. xix, 210 p. : 43 fig., 14 tab.