1990
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Petite hydraulique agricole a Madagascar. Ede, The Netherlands: Centre Technique de Cooperation Agricole et Rurale, 1990, p. 74 p.: fig., photogr.
P. H. Environmen City,
« The Philippine environment in the eighties ». Philippines, Environmental Management Bureau, Quezon City, The Philippines, p. xxiii, 301 p.: 51 fig., 119 tab., 1990.
T. C. Kandpal et Matthur, S. S.,
« Physics of solar water disinfection : an introductory review », in
Solar water disinfection : proceedings of a workshop held at the Brace Research Institute, Montreal, Que., Canada, 15-17 August 1988, 1990, p. P. 133-154: fig., tab.
IRC International Water and Sanitation Centre, The Hague, NL, ZM, Z. Department, ZM, Z. Department, et ZM, Z. Ministry o,
« Piped supplies for small communities project, Zambia : interim report, period January 1988 - December 1989 ». IRC, The Hague, The Netherlands, p. 11 p., 1990.
J. A. Hueb,
« Pipes and operation and maintenance in selected cities of Pakistan ». World Health Organization, Community Water Supply & Sanitation Unit, Geneva, Switzerland, p. 147 p.: tab., fig., photogr., 1990.
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« Plan nacional de abastecimiento de agua potable y saneamiento para el area rural 1991-1995 ». Guatemala, Ministerio de Salud Publica y Asistencia Social, Guatemala, Guatemala, p. 124 p. + ca. 60 p. annexes: fig., tab, 1990.
D. Ey,
« Planning for Central America water and sanitation programs », vol. no. 301. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. xvi, 110 p.: fig., map, tab., 1990.
D. Ey,
« Planning for water and sanitation programs in Bolivia, Ecuador, and Peru », vol. no. 302. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. xiii, 62 p.: fig., map, tab., 1990.
D. Ey,
« Planning for water and sanitation programs in the Caribbean », vol. no. 303. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. xv, 72 p.: fig., map, tab., 1990.
A. J. Lema,
« Pollution control legislation in Tanzania », in
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J. G. Janssens, Verstraete, W., Liessens, J., et Vochten, P.,
« Polyurethane prefilters to improve slow sand filtration »,
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IDRC -Ottawa, Ont., CA, International Development Research Centre et IRC International Water and Sanitation Centre, The Hague, NL,
Pompes a main : questions relatives aux programmes d'approvisionnement en eau des collectivites rurales, vol. no. 25. The Hague, The Netherlands: IRC, 1990, p. xiii, 202 p.: fig., tab., photogr.
S. Cairncross, Hardoy, J. E., et Satterthwaite, D.,
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D. General fo DGIS,
« Position paper on low-cost wastewater treatment and reuse ». Netherlands, Ministry of Foreign Affairs, DGIS, The Hague, The Netherlands, p. 40, x p.: fig., 1990.