1990
J. A. Goodrich, Bouwer, H., David, R., et Pyne, G.,
« Recharging ground water »,
Water resources journal, p. p. 7-9: fig., 1990.
A. Wyatt,
« A re-examination of costs and benefits of rural water supply projects in Central Tunisia », vol. no. 298. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. viii, 78 p.: fig., tab., 1990.
PAHO -Washington, DC, US,
« 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 ». Pan American Health Organization (PAHO), Washington, DC, USA, p. 11 papers, 1990.
M. Y. P. E. P. A. S. - Kua Lumpur,
« Regional workshop on municipal solid waste management : report ». Western Pacific Regional Centre for the Promotion of Environmental Planning and, Kuala Lumpur, Malaysia, p. 26 p., 1990.
P. Evans,
« Report of a consultancy mission to Eastern Caprivi, Namibia, to review UNICEF support to water supply development, and related isues, 10-13 September, 1990 ». UNICEF, Windhoek, Namibia, p. 17 p., 1990.
I. N. U. N. I. C. E. F. Reg Delhi, Delhi, I. N. World Bank, et 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.
R. M. Ballance,
« Report on IDWSSD actvities in human resources development », vol. 3. World Health Organization, Community Water Supply & Sanitation Unit, Geneva, Switzerland, p. 15 p.: photogr., 1990.
S. A. Esrey,
« Report on IDWSSD impact on diarrheal disease », vol. 1. World Health Organization, Community Water Supply & Sanitation Unit, Geneva, Switzerland, p. 12 p.: photogr., 1990.
D. R. Hopkins,
« Report on IDWSSD impact on dracunculiasis », vol. no. 5. World Health Organization, Community Water Supply & Sanitation Unit, Geneva, Switzerland, p. 15 p. : fig., photogr., 1990.
D. W. F. Miller,
« Report on IDWSSD impact on schistosomiasis », vol. 6. World Health Organization, Community Water Supply & Sanitation Unit, Geneva, Switzerland, p. 19 p.: fig., photogr., tab., 1990.