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« Small water system operation and maintenance : a field study training program », vol. no. 1. California State University, Office of Water Programmes, Sacramento, CA, USA, p. x, 578 p. : fig., incl. 2 posters, 1993.
R. Carter,
« Small-scale irrigation : the need for thorough feasbility studies »,
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« Soap, mud or ashes »,
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« Solar distillation », vol. no. W11e. German Appropriate Technology Exchange (GATE) /Deutsche Gesellschaft für Technische Zusammenarbeit (GTZ), Eschborn, Germany, p. 8 p. : 2 fig., 1993.
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C. Visvanathan, Muttamara, S., et Alwis, K. U.,
Solid waste recycling and reuse in Bangkok, vol. no. 33. Bangkok, Thailand: Environmental Systems Information Center, 1993, p. 48 p.: 8 fig., 19 tab., ill., photogr.
K. Bae Yu, Kim, Y. - J., et Hwang, C.,
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N. King,
« Some for all? »,
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« A strategy for a community-based hygiene education and sanitation project : proposal for the Eastern Highlands Province, Papua New Guinea », vol. no. 399. Environmental Health Project (EHP), Arlington, VA, USA, p. vii, 42 p.: 3 fig., 2 boxes, 1993.
B. Kanki, Cousens, S., Mertens, T., Diallo, I., Traore, E., et Curtis, V.,
« Structured observations of hygiene behaviours in Burkina Faso : validity, variability, and utility »,
Bulletin of the World Health Organization, p. p. 23-32: 5 tab/, 1993.
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« Study on assessment of water resources of member countries and demand by user sectors, Japan : water resources and their use ». United Nations, New York, NY, USA, p. vi, 40 p.: 27 fig., 15 fig., 1993.
N. U. Ahmed,
« Successful community involvement »,
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