UN Economic Commission for Asia and the Pacific -Bangkok,TH, ESCAP,
« Manual and guidelines for comprehensive flood loss prevention and management ». United Nations, New York, NY, USA, p. v, 92 p.: fig., photogr., tab., 1991.
B. A. Janonis, Logsdon, G. S., Collins, M. R., Barrett, J. M., Bryck, J. M. G., et Hendricks, D.,
Manual of design for slow sand filtration. Denver, CO, USA: American Water Works Association, 1991, p. xxxv, 247 p.: fig., tab.
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.
WASH -Arlington, VA, US,
« Private sector participation in urban water supplies issues for investment in Indonesia : volume I : a strategic framework for increasing private sector participation in urban water supply in Indonesia », vol. no. 330. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. xv, 33 p.: fig., tab., 1991.
J. E. Gould,
Rainwater catchment systems for household water supply, vol. no. 32. Bangkok, Thailand: Environmental Sanitation Information Center, ENSIC, 1991, p. iii, 57 p.: 12 fig., 14 photogr., 4 tab.
I. N. D. A. N. I. D. A. - Bhubaneshwar,
« Rehabilitation guidelines ». DANIDA, Ministry of Foreign Affairs, Bhubaneshwar, India, p. 16 p. + 84 p. annexes: fig., tab., 1991.