1991
J. van der Heide, Orozco, J. G., en van Wasbeek, D.,
Evaluacion hidraulica de plantas potabilizadoras de filtracion rapida en Nicaragua, vol. no. 40. Delft, The Netherlands: Delft University of Technology, Department of Civil Engineering, 1991, p. 34 p. : 16 fig., 7 tab.
R. D. Faulkner en Lambert, R. A.,
“Household pumps from the informal sector”, in
Infrastructure, environment, water and people : proceedings of the 17th WEDC Conference, United Nations Centre for Human Settlement (Habitat), Nairobi, Kenya, 19-23 August 1991, 1991, pp. P. 185-188: 2 fig., 1 tab.
R. McGowan, S. Omer, A., A. Hamza, A., A. Eltayeb, O., N. Ahmed, Y., en Hodgkin, J.,
“Meeting rural pumping needs in Sudan : an analysis of pumping system choice (diesel, wind, or solar)”. Associates in Rural Development, Burlington, VT, USA, p. ca. 180 p.: fig., tab., 1991.
P. Ikumi en Oenga, I. O.,
“Mid-term review for the Kenya-Finland western water supply programme : field survey report”. Network for Water and Sanitation International (NETWAS), Nairobi, Kenya, p. viii, 92, 8 p.: fig., tab., 1991.
O. Guene, Tandia, C., en Toure, C. S.,
“Qualite des eaux des citernes de captage d'eau de pluie au Sahel”, in
Rainwater catchment for future generations : proceedings of the 5th International Conference on Rain Water Cistern Systems, Keelung, Taiwan, 4-10 August 1991, 1991, pp. P. 69-79 : 7 fig., 4 tab.
C. Hart,
“A tale of two latrines”,
Source, pp. p. 24-26: photogr., 1991.
R. Ramasubban, Singh, B., Bhatia, R., Griffin, C. C., Kim, C., en Briscoe, J.,
“Willingness to pay for water in Kerala, India”. Centre for Social and Technological Change, Bombay, India, p. vii, 65 p.: 18 fig., 24 tab., 1991.
1990
W. Getachew,
Disinfection practices in urban water supply in Ethiopia, vol. no. 45. Tampere, Finland: Tampere University of Technology, Institute of Water and Environmental Engineeri, 1990, p. 73 p.: 27 fig., 14 tab.
F. I. F. I. N. N. I. D. A. - Helsinki, Helsinki, F. I. Kefinco -, en KE, K. Ministry o,
“Kenya-Finland Western Water Supply Programme : quarterly review Jul 90 - Sep 90”. FINNIDA, Ministry of Foreign Affairs, Helsinki, Finland, p. 19 p. + annexes (ca. 48 p.) : fig., tab., 1990.
Meridian Corporation -Alexandria, VA, US en Eversley, G. B. I. T. Power -,
“Learning from success : photovoltaic-powered water pumping in Mali”. US Committee on Renewable Energy Commerce and Trade, Washington, DC, USA, p. viii, 59 p.: fig., map, tab., 1990.
J. Ramakrishna, Sridhar, M. K. C., Adeniyi, J. D., en Brieger, W. R.,
“Monitoring use of monofilament nylon water filters for Guineaworm control in a rural Nigerian community”,
International quarterly of community health education, pp. p. 5-18: tab., 1990.
G. K. Folkard, Sutherland, J. P., en Grant, W. D.,
“Natural coagulants for appropriate water treatment : a novel approach”,
Waterlines, an international journal of water, sanitation and waste, pp. p. 30-32: fig., photogr., 1990.
G. K. Folkard, Sutherland, J. P., en Grant, W. D.,
“Natural coagulants for small scale water treatment : potential applications”,
ASEP newsletter, pp. p. 1-2, 10, 14: fig., tab., 1990.
I. N. U. N. I. C. E. F. Reg Delhi, Delhi, I. N. World Bank, en IN, I. Rajiv Gand,
“Report on field testing in Coimbatore of the standard India Mark II and open top cylinder India Mark III pumps”. World Bank Regional Water and Sanitation Group South Asia, New Delhi, India, p. ca. 130 p.: fig., tab., 1990.
T. Woto, Yates, R., en Tlhage, J. T.,
Solar-powered desalination : a case study from Botswana, vol. 65e. Ottawa, Ont, Canada: International Development Research Centre (IDRC), 1990, p. viii, 55 p.: fig., tab., photogr.
M. R. Meghji en Merinyo, G.,
“Water based pollution in Dar es Salaam”, in
Environmental pollution and its management in Eastern Africa : proceedings of a symposium organized by the Faculty of Science, University of Dar es Salaam, Dar es Salaam, September 11-14th, 1989, 1990, pp. P. 103-128: 2 fig., 13 tab.