1991
J. Hukka en Viitasaari, M.,
“Industrial wastewaters '89 Nairobi : proceedings of the first IAWPRC East African regional conference on industrial wastewaters, held in Nairobi, Kenya, 25-28 October 1989”. Pergamon, Oxford, UK, p. xiv, 106 p.: fig., tab., 1991.
M. Pillay en Terry, S.,
“Informal settlements : impact on water quality”, 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, pp. P. 25-28: 6 fig.
J. Pickford,
“Infrastructure, environment, water and people : proceedings of the 17th WEDC Conference, United Nations Centre for Human Settlement (Habitat), Nairobi, Kenya, 19-23 August 1991”. Water, Engineering and Development Centre, Loughborough University of Technology, WEDC, Loughborough, UK, p. xvi, 302 p.: fig., tab., 1991.
M. D. Smith,
“Infrastructure for low-income communities : proceedings of the 16th WEDC conference : Regional Centre for Urban and Environmental Studies (RCUES), Osmania University, Hyderabad, India, 27-31 August, 1990”. Water, Engineering and Development Centre, Loughborough University of Technology, WEDC, Loughborough, UK, p. xii, 225 p.: fig., tab., 1991.
M. A. Harvey,
“Institutional development in the water sector in San Luis Potosi”. Water, Engineering and Development Centre, Loughborough University of Technology, WEDC, Loughborough, UK, p. viii, 91, 14 p.: 20 fig., 4 tab., 1991.
W. D. G. Lawn, Morris, N. G., en Newbury, D. R.,
“Integrated approach to infrastructural development”, 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, pp. P. 85-88: 2 fig.
J. B. M. Chimedza,
“Integrated approach to rural development”, in
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J. Hahn, Vrba, J., Aldwell, C. R., Alfoldi, L., Andersen, L. J., Kaden, S., Miller, J. C., en van Waegeningh, H. G.,
“Integrated land-use planning and groundwater protection in rural areas : a comparative study of planning and management methodologies”. UNESCO International Hydrological Programme, UNESCO-IHP, Paris, France, p. viii, 102 p.: fig., tab., 1991.
UNDTCD -New York, NY, US,
“Integrated water resources planning”. United Nations Department of Technical Co-operation for Development, New York, NY, USA, p. iii, 128 p.: fig., tab., 1991.
P. P. Macy,
“Integrating conservation and water master planning”,
Journal American Water Works Association, pp. p. 44-47: 2 fig., 3 tab., 1991.
M. X. Comision N. City, Jiutepec, M. X. Instituto, en IWRA -Urbana, IL, US,
“International Seminar on Efficient Water Use : proceedings”. Comision Nacional del Agua, Mexico City, Mexico, p. 938 p.: fig., tab., 1991.
S. A. Esrey,
“Interventions for the control of diarrhoeal diseases among young children : fly control”. World Health Organization, Diarrhoeal Diseases Control Programme, Geneva, Switzerland, p. 19 p.: 5 tab, 1991.
L. K. Helvetas - Moratuwa en Moratuwa, L. K. Sarvodaya,
“Introduction to surveying”. Helvetas, Swiss Association for Development and Cooperation, Nugegoda, Sri Lanka, p. 11 p. : tab., fig., photogr., 1991.