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J. Reynolds,
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D. K. Mehta,
“Improvement in O & M in rural water supply in Junagadh District in State of Gujarat, India”. IHE (International Institute for Infrastructural, Hydraulic and Environmental Engineering), Delft, The Netherlands, p. ca. 90 p.: fig., tab., 1992.
D. C. Pyakural,
“Strategies for system sustainability of larger water supply systems : with references to case studies in Nepal”, vol. no. 58. IHE (International Institute for Infrastructural, Hydraulic and Environmental Engineering), Delft, The Netherlands, p. ca. 120 p.: fig., tab., maps, photogr., 1992.
B. J. Lloyd and Guerrero, M.,
“Using biotic indicators to assess water quality in Peru”,
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