1989
R. Kfir, Bateman, W., Pitout, B. A., et Coubrough, P.,
« Disinfection of polluted water by chlorine-flocculant tablet »,
Water science and technology, p. p. 207-213 : tab., fig., 1989.
R. Suresh,
« Drinking water in Kerala : facts, figures and opinions on the use, availability and treatment of water », vol. no. 4. Kerala Water Authority, Socio-Economic Units, Trivandrum, India, p. 42 p.: fig., tab., 1989.
D. General fo DGIS,
« Drinking water supply, sanitary facilities, drainage and waste disposal in developing countries : sector memorandum ». Netherlands, Ministry of Foreign Affairs, DGIS, Information Department, The Hague, The Netherlands, p. 20 p., 1989.
N. Ministry o NL,
« Drinkwatervoorziening, sanitaire voorzieningen, drainage en afvalverwijdering in ontwikkelingslanden : sektornotitie ». Netherlands, Ministry of Foreign Affairs, DGIS, Information Department, The Hague, The Netherlands, p. 23 p., 1989.
O. Bueno et Reyes, E.,
« Educacion para la salud ». Departemento de Salud y Alimentacion, Lima, Peru, p. 3 readers: ill., 1989.
R. K. Molvaer,
« Education for better health : a manual for senior health educators ». Ethiopia, Ministry of Health, Health Learning Materials Development and Production Div, Addis Ababa, Ethiopia, p. ix, 117 p.: drawing, 1989.
P. Roark, Webster, M., et van der Geest, F.,
« Emergency technical assistance to Botswana for rural water supply », vol. no. 269. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. iii, 89 p.: photogr., 1989.
N. Espinoza, Riofrio, G., Olivera, L., et Calderon, J.,
« Empresas de servicios y usuarios urbano populares : como desarrolar proyectos comunes? ». CIDAP, Lima, Peru, p. 37 p., 1989.
D. D. Mara, Ayres, R., et Lee, D.,
« The enumeration of human intestinal nematode eggs in raw and treated wastewaters ». University of Leeds, Department of Civil Engineering, Leeds, UK, p. vii, 75 p.: fig., tab., 1989.
D. General fo DGIS,
« Environment and development ». Netherlands, Ministry of Foreign Affairs, DGIS, The Hague, The Netherlands, p. 43 p.: fig., photogr., 1989.
N. L. Euroconsul Arnhem, IN, I. Ministry o, Nijmegen, N. L. Royal Hask, Delhi, I. N. Iramconsul, DGIS, D. General fo, et Bombay, I. N. A. I. C. -,
« Environmental and Sanitary Engineering Project in Kanpur and Mirzapur Under Ganga Action Plan : mid term status report ». Netherlands, Ministry of Foreign Affairs, DGIS, The Hague, The Netherlands, p. 151 p. : fig., 1989.
D. W. F. Miller et Michael, J. M.,
« Environmental health in Micronesia »,
Asia-Pacific journal of public health, p. p. 51-60: fig., tab., 1989.
G. Schramm et Warford, J. J.,
Environmental management and economic development. Baltimore, MD, USA: Johns Hopkins University Press, 1989, p. x, 208 p.: fig., tab.