1991
L. Chairuca et Hassane, I.,
« Nitrate contamination in peri-urban Maputo (Mozambique) », in
Infrastructure, environment, water and people : proceedings of the 17th WEDC Conference, United Nations Centre for Human Settlement (Habitat), Nairobi, Kenya, 19-23 August 1991, 1991, p. P. 203-207: 3 fig.
« no. 125 »,
The Courier. 1991.
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P. E. C. E. P. I. S. - Lima,
« no. 41. El colera »,
Repindex. CEPIS (Centro Panamericano de Ingenieria Sanitaria y Ciencias del Ambiente), Lima, Peru, p. vii, 112 p., 1991.
« no. 53 (1991) »,
Echos du COTA. 1991.
« no. 86 »,
Bulletin de liaison du Comite Interafricain d'Etudes Hydrauliques. 1991.
M. Mujwahuzi,
« The Nordic initiative », in
Collaborative council global forum, Oslo, September 18-20, 1991 : collected papers, 1991, p. 8 p.
N. Bazezew Legesse,
« Ogaden emergency water supply project », in
Infrastructure, environment, water and people : proceedings of the 17th WEDC Conference, United Nations Centre for Human Settlement (Habitat), Nairobi, Kenya, 19-23 August 1991, 1991, p. P. 147-150: 2 fig.
M. H. A. Wegelin-Schuringa,
« On-site sanitation : building on local practice », vol. no. 16-E. IRC, The Hague, The Netherlands, p. 74 p.: fig., tab., 1991.
C. Chibi,
« Optimization of ground catchments to maximize rain water collection in South Africa », in
Rainwater catchment for future generations : proceedings of the 5th International Conference on Rain Water Cistern Systems, Keelung, Taiwan, 4-10 August 1991, 1991, p. P. 283-291 : 3 tab.
A. P. Cotton et Franceys, R. W. A.,
« Optimizing infrastructure », in
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M. Wickremage,
« Organizational development : a Sri Lankan experience », in
A strategy for water sector capacity building : proceedings of the UNDP symposium, Delft, 3-5 June, 1991, 1991, p. P. 145-155: 1 tab.
B. H. Liese, Sachdeva, P. S., et Cochrane, D. G.,
Organizing and managing tropical disease control programs : lessons of success, vol. no. 159. Washington, DC, USA: World Bank, 1991, p. x, 51 p.: 16 box, 9 fig., 2 tab.
P. Kanyetta et Schoone, J.,
« Participation and education program : first quarterly report 1991 ». Zambia, Department of Water Affairs, Rural Water for Health Project, Solwezi, Zambia, p. 14 p., 1991.
E. Gohl, Ullrich, G. J., et Krappitz, U.,
« Participatory approaches for cooperative group events : basic concepts, case study, practical tips ». German Foundation for International Development (DSE), Bonn, Germany, p. iv, 77 p. : photogr., 1991.