1990
K. Tayler,
«Sewerage for low-income communities in Pakistan»,
Waterlines, an international journal of water, sanitation and waste, pp. p. 21-24: fig., photogr., tab., 1990.
M. Woodhouse,
«Shallow well construction techniques in Kibwezi, Kenya». African Medical and Research Foundation (AMREF), Nairobi, Kenya, p. 9 p.: 7 fig., 1990.
E. Nissen-Petersen y Lee, M.,
«Shallow wells with bucketlift», vol. no. 4. ASAL Rainwater Harvesting, Nairobi, Kenya, p. 26 p.: fig., 1990.
N. L. D. H. V. - Amersfoort, Arnhem, N. L. Euroconsul, y Maarssenbroek, N. L. Agro Visio,
«Short-term mission to Rada water supply and sanitation project and Dhamar health improvement and waste disposal project : inventory of training institutes in the Yemen Republic». Euroconsult, Arnhem, The Netherlands, p. 16 p. + annexes (ca. 45 p.): fig., tab., 1990.
PAHO -Washington, DC, US,
«Situacion del abastecimiento de agua potable y del saneamiento en la Region de las Americas al finalizarse el Decenio 1981-1990, y perspectivas para el futuro. Volumen 2», in
Regional conference on water supply and sanitation : evaluation of the International Drinking Water Supply and Sanitation Decade and projections towards the year 2000, Puerto Rico, 4-6 September de 1990, 1990, p. xvi, 59 p. + 9 p. annexes.
PAHO -Washington, DC, US,
«The situation of drinking water supply and sanitation in the American region at the end of the Decade 1981-1990, and prospects for the future. Volume 1», in
Regional conference on water supply and sanitation : evaluation of the International Drinking Water Supply and Sanitation Decade and projections towards the year 2000, Puerto Rico, 4-6 September de 1990, 1990, p. xvi, 59 p. + 9 p. annexes.
J. T. Visscher,
«Slow sand filtration : design, operation, and maintenance»,
Journal American Water Works Association, pp. p. 67-71: fig., photogr., tab., 1990.
D. E. Leland y Damewood, M.,
«Slow sand filtration in small systems in Oregon»,
Journal American Water Works Association, pp. p. 50-59: fig., photogr., tab., 1990.
E. Nissen-Petersen,
«Small earth dam built by animal traction», vol. no. 2. ASAL Rainwater Harvesting, Nairobi, Kenya, p. 27 p.: fig., 1990.
M. M. Zaki,
«Small scale water systems in Upper Egypt»,
Water quality bulletin, pp. p. 43-45, 64: fig., 1990.
P. Wirojanagud y Smith, K.,
«Small watershed management in Thailand»,
Waterlines, an international journal of water, sanitation and waste, pp. p. 2-5: photogr., tab., 1990.
R. Belli,
«Social activities in support of water supply projects»,
Cooperazione / English edition, pp. p. 33-37: photogr., tab., 1990.
U. Ministry o UG, Copenhagen, D. K. D. A. N. I. D. A. -, UG, U. Ministry o, UG, U. Ministry o, y UG, U. Ministry o,
«Social mobilization for the rural water and sanitation project». Uganda, Ministry of Water and Mineral Development, Kampala, Uganda, p. 12 p.: drawing, 1990.
P. C. Pinto,
«Social valorization of the water & sanitation sector : action proposal for the nineties», in
Regional conference on water supply and sanitation : evaluation of the International Drinking Water Supply and Sanitation Decade and projections towards the year 2000, Puerto Rico, 4-6 September de 1990, 1990, p. 18 p. : 2 fig.
E. Nordberg y Finer, D.,
Society, environment and health in low-income countries. Stockholm, Sweden: Karolinska Institute, 1990, p. 186 p. : fig., tab.