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Dorea, C.C., Clarke, B.A., and Bertrand, S., “Performance of a multi-stage filtration plant after its handover ”, Water policy : official journal of the World Water Council, pp. p. 559-570 : 8 fig. , 2004.

Hoque, B.A., “Handwashing practices and challenges in Bangladesh”, International journal of environmental health research, pp. p. 81-87 : 3 tab., 2003.

Islam, S., Alam, M.J., Sadique, M.A., Nair, G.B., Sack, D.A., Rahman, M.A., Kabir, M.S., Khan, S.I., Ekramullah, M., Sack, R.B., Huq, A., and Colwell, R.R., “Faecal contamination of a fish culture farm where hospital wastewater grown duckweeds are used as fish feed”, in Ecosan : closing the loop in wastewater management and sanitation : proceedings of the international symposium, 30-31 October 2000, Bonn, Germany, 2001, pp. P. 289-298 : 4 fig.

Oxfam -Oxford, GB, “Oxfam guidelines for water treatment in emergencies”. Oxfam, Oxford, UK, p. 45 p. : 4 fig., 2001.

Simavi -Haarlem, NL, “Message in a bottle : solar water disinfection”. Simavi, Haarlem, The Netherlands, p. 28 p. fig., photogr., tabs., 2000.

Okurut, T.O., A pilot study on municipal wastewater treatment using a constructed wetland in Uganda. Rotterdam, The Netherlands: A.A. Balkema, 2000, p. xii, 171 p. : fig., tab.

Duindam, P., Mwiinga, G., and Mvula, F., “Evaluation of the drinking water supply at Fairview Hotel : Lusaka”. University of Zambia, Lusaka, Zambia, p. 16 p. : 2 fig., 3 tab., 1998.

Wegelin, M. and Sommer, B., “Solar water disinfection (SODIS) - destined for worldwide use?”, Waterlines, an international journal of water, sanitation and waste, pp. p. 30-32 : 3 fig., 1 photogr., 1 tab., 1998.

Mara, D.D., Pearson, H.W., Alabaster, G.P., and Mills, S.W., An evaluation of waste stabilization ponds in Kenya, vol. no. 11. Leeds, UK: University of Leeds, Department of Civil Engineering, 1997, p. x, 109 p. : fig., tab.

Acra, A. and Ayoub, G., “Experimental evaluation of a novel photodynamic water disinfection technique”, Aqua : journal of water supply research and technology, pp. p. 218-223 : 5 fig., 2 tab., 1997.

United Nations Department for Policy Coordination and Sustainable Development -New York, NY, US, “Indicators of sustainable development: framework and methodologies”. United Nations Department for Policy Coordination and Sustainable Development, New York, NY, USA, p. 22 p., 1997.

Wegelin, M., Sommer, B., Marino, A., Solarte, Y., Salas, M.L., Dierolf, C., Valiente, C., Mora, D., Rechsteiner, R., Setter, P., Wirojanagud, W., Ajarmeh, H., and Al-Hassan, A., “SODIS : an emerging water treatment process”, Aqua : journal of water supply research and technology, pp. p. 127-137 : 10 fig., 11 tab., 1997.

Wegelin, M. and Sommer, B., “SODIS at the turning point : a technology ready for use”, SANDEC news, pp. p. 1-10 : 5 fig., 3 tab., 2 photogr., 1997.

Mara, D.D. and Ayres, R.M., Analysis of wastewater for use in agriculture : a laboratory manual of parasitological and bacteriological techniques. Geneva, Switzerland: World Health Organization (WHO), 1996, p. iv, 31 p. : 1 fig., 40 photogr., 3 tab.

Mara, D.D., Vaz da Costa, S.M., and Bastos, R.K.X., Bacteriological aspects of wastewater irrigation, vol. no. 8. Leeds, UK: University of Leeds, Department of Civil Engineering, 1996, p. xiii, 118 p. : fig., tab.

Visscher, J.T., Latorre M., J., Galvis C., G., and Ochoa, A.E., “Comparison of horizontal and upflow roughing filtration”, in Advances in slow sand and alternative biological filtration, 1996, pp. P. 341-348 : 2 fig., 6 tab.

Lloyd, B.J., Graham, M.J.D., Clarke, B.A., and Jones, C.J., “Effect of reduced depth, fabric-protected slow sand filters on treated water quality”, in Advances in slow sand and alternative biological filtration, 1996, pp. P. 233-243 : 7 fig., 6 tab.

Grant, M.A. and Ziel, C.A., “Evaluation of a simple screening test for faecal pollution in water”, Aqua : journal of water supply research and technology, pp. p. 13-18: 5 tab., 1996.

Mara, D.D., Silva, S.A., and Oliveira, R. de, Performance of waste stabilization ponds in Northeast Brazil, vol. no. 9. Leeds, UK: University of Leeds, Department of Civil Engineering, 1996, p. ix, 139 p. : fig., tab.

Wegelin, M., Zimmerman, T., and Burgthaler, B., “Rehabilitation of slow sand filters and new treatment plant designs in rural Cameroon”, in Advances in slow sand and alternative biological filtration, 1996, pp. P. 359-369 : 7 fig., 5 tab.

Drasar, B.S., Kaltenthaler, E.C., and Potter, C.W., “The use of microbiology in the study of hygiene behaviour”, Microbios, pp. p. 35-43 : 4 tab., 1996.

Mara, D.D., Pearson, H.W., Silva, S.A., Oliveira, R. de, Oragui, J.I., and Cawley, L.R., Wastewater storage and treatment reservoirs in Northeast Brazil, vol. no. 12. Leeds, UK: University of Leeds, Department of Civil Engineering, 1996, p. viii, 34 p. : 7 fig., 21 tab.

Lloyd, B.J., Clarke, B.A., Jones, C.J., and Evans, H.L., “Water treatment by multistage filtration utilising gravel prefilters and fabric enhanced slow sand filters”, in Advances in slow sand and alternative biological filtration, 1996, pp. P. 313-326 : 12 fig., 2 tab.

Briscoe, J. and Vanderslice, J., “Environmental interventions in developing countries : interactions and their implications”, American journal of epidemiology, pp. p. 135-144: 1 fig., 8 tab., 1995.