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E. Nissen-Petersen and Lee, M., Shallow wells with bucketlift, vol. no. 4. ASAL Rainwater Harvesting, Nairobi, Kenya, p. 26 p.: fig., 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. Waterman, Spring protection : a technical guide of how to protect a spring. S.n., S.l., p. 6 p. + 16 p. (annexes): drwng., 1990.
E. Nissen-Petersen and Lee, M., Spring protections, vol. no. 6. ASAL Rainwater Harvesting, Nairobi, Kenya, p. iii, 29 p.: fig., 1990.
E. Nissen-Petersen and Lee, M., Water tanks with guttering and hand-pump, vol. no. 1. ASAL Rainwater Harvesting, Nairobi, Kenya, p. ii, 52 p. : fig., tab., 1990.
Z. W. Blair Rese Harare, The Blair latrine builders manual. Blair Research Laboratory, Harare, Zimbabwe, p. 24 p.: fig., 1989.
U. Kingdom. C. GB, Committee on chemicals and materials of construction for use in public water supply and swimming pools : fifteenth statement. United Kingdom, Department of the Environment, Drinking Water Division, London, UK, p. 2 vol. (37, 9 p.), 1989.
A. Wyatt and Jordan, J., Estimating operations and maintenance costs for water supply systems in developing countries, vol. no. 48. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. ix, 156 p.: fig., tab., 1989.
P. Morgan, The handpump phenomenon, Waterlines, an international journal of water, sanitation and waste, pp. p. 2-5: photogr., 1989.
N. P. U. N. I. C. E. F. Reg Kathmandu and NP, N. Ministry o, How to build a pit latrine. Nepal, Ministry of Education and Health, Kathmandu, Nepal, p. 24 p. : ill., 1989.
P. J. Chilton and Lewis, W. J., The impact of plastic materials on iron levels in village groundwater supplies in Malawi, Journal of Institution of Water and Environmental Management, pp. p. 82-88: fig., 1989.
B. Ministere BJ and World Bank. Regional Water and Sanitation Group for West and Central Africa -Abidjan, CI, Groupe Regional Eau et Assainissement Afrique de l'Ouest / GREA-AO, Livret guide a l'usage des agents d'hygiene, des services techniques, des enseignants et des personnels de sante : livret II : schemas explicatifs pour la construction des latrines ameliorees a fosses ventilees. MEPS, Materiels d'Enseignement pour les Personnels de Sante, Cotonou, Benin, p. 70 p.: fig., 1989.
N. F. Munch-Petersen, Low cost sanitation in Bangladesh as related to the Low cost sanitation project covering 84 pourashavas : consultants report. Hoff & Overgaard a/s, Copenhagen, Denmark, p. ca. 127 p.: photogr., tab., 1989.
T. O. Institute Nuku'alofa, Making a ventilated improved pit latrine, vol. no. 7. University of the South Pacific, Institute of Rural Development, Nuku'alofa, Tonga, p. 12 p.: fig., 1989.
D. H. Waller, Rain water : an alternative source in developing and developed countries, Water international, pp. p. 27-36 : tab., 1989.
B. D. World Bank Dhaka, Dhaka, B. D. A. Q. U. A. Consu, and Dhaka, B. D. Local Gove, Socio-economic survey on low cost sanitation : final report. AQUA Consultant & Associates, Dhaka, Bangladesh, p. ca. 125 p.: tab., 1989.
USAID -Washington, DC, US and Ratmalana, L. K. National W., Wastewater treatment, Draft., vol. no. D7. Ratmalana, Sri Lanka: National Water Supply and Drainage Board, 1989, p. vi, 89 p.: fig., tab.
C. Gampher and Gates, S., Well construction using curved hollow block. Haribon Foundation, Manila, Philippines, p. 115 p.: fig., tab., 1989.
R. Stulz and Mukerji, K., Appropriate building materials : a catalogue of potential solutions. IT Publications, London, UK, p. 430 p.: fig., photogr., 1988.
Z. Ministry o ZW, The double compartment Blair latrine builder's instruction manual. Zimbabwe, Ministry of Health, Harare, Zimbabwe, p. 28 p.: fig., 1988.
P. L. M., Letrinas sanitarias aboneras a base de tambor : Chile, in Saneamiento alternativo o alternativas al saneamiento : actas del 1er seminario latinoamericano sobre saneamiento alternativo, Medellin, Colombia, Julio 24-29 de 1987, 1988, pp. P. 89-104 : fig.
S. E. S. I. D. A. - Stockholm, Manual for improvement of traditional water sources. Health through Sanitation and Water (HESAWA), Bukoba, Tanzania, p. 14 p.: ill., tab., 1988.
B. D. U. N. I. C. E. F. - Dhaka and BD, D. P. H. E. Bangladesh, A report on the development of an iron removal plant for handpump tubewells. UNICEF, Dhaka, Bangladesh, p. 15 p.: fig., photogr. + 1 tech. drwng, 1988.
UNDP -New York, NY, US, Roof catchments, roof coverings, guttering, downpipes. UNDP Department of Technical Cooperation for Development, Suva, Fiji, p. 49 p.: fig., 1988.
R. Stark, Well construction manual. Sarvodaya Rural Technical Services, Moratuwa, Sri Lanka, p. 26 p.: fig., 1988.