1990
S. Akhtar,
“National information and informatics policies in Africa : report and proceedings of a regional seminar, Addis Ababa, Ethiopia, 28 November - 1 December 1988”. International Development Research Centre (IDRC), Ottawa, Ont, Canada, p. vii, 298 p.: fig., tab., 1990.
G. K. Folkard, Sutherland, J. P., and 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., and Grant, W. D.,
“Natural coagulants for small scale water treatment : potential applications”,
ASEP newsletter, pp. p. 1-2, 10, 14: fig., tab., 1990.
S. C. Reed,
Natural systems for wastewater treatment, vol. FD-16. Alexandria, VA, USA: Water Pollution Control Federation, 1990, p. v, 270 p.: fig., tab.
S. Price,
“New initiatives in water supply and sanitation : project success and sustainability”, vol. no.1. AusAID Australian Agency for International Development, Canberra, ACT, Australia, p. 24 p., 1990.
D. B. Warner,
“New roles for monitoring and evaluation in water supply and sanitation”. World Health Organization, Community Water Supply & Sanitation Unit, Geneva, Switzerland, p. 9 p.: fig., 1990.
“no. 165”,
Water resources journal. 1990.
“no. 166”,
Water resources journal. 1990.
“no. 47 (1990)”,
Echos du COTA. 1990.
“no. 48 (1990)”,
Echos du COTA. 1990.
“no. 79”,
Bulletin de liaison du Comite Interafricain d'Etudes Hydrauliques. 1990.
“no. 81”,
Bulletin de liaison du Comite Interafricain d'Etudes Hydrauliques. 1990.
“no. 82”,
Bulletin de liaison du Comite Interafricain d'Etudes Hydrauliques. 1990.
R. Fothergill and Butchart, I.,
Non-book materials in libraries : a practical guide, 3rd ed.rd ed. London, UK: Library Association Publishing, 1990, p. vi, 319 p.: 30 fig.
T. Triche and Schertenleib, R.,
“Non-government delivery of urban solid waste collection services”, vol. no. WS-2. World Bank, Infrastructure and Urban Development Department, Washington, DC, USA, p. 3 p., 1990.
N. L. Euroconsul Arnhem, Khartoum, S. D. National U., SD, S. Ministry o, and DGIS, D. General fo,
“Nyala and El Geneina water supply project phase 2 : rehabilitation and upgrading : final report”. Euroconsult, Arnhem, The Netherlands, p. i, 30 p.: 5 fig., 2 tab., 1990.
R. E. Hall and Malina, A.,
“O&M strategies for rural water supply in Zaire : phase II : set up of operational tests”, vol. no. 308. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. vi, 65 p., 1990.
J. K. Jordan and Ashmawi, M.,
“O&M vital to rural water supply systems in Egypt”,
Water and wastewater international, pp. p. 19-25 : photogr., 1990.
M. Mwadiga,
“Once a success, now a failure : Kigombero water point, Kikoneni location : a case study”. Kenya Water for Health Organization (KWAHO), Monitoring and Evaluation Unit, Kwale, Kenya, p. 4 p., 1990.