W. Warner, Haarstad, K., et Lystad, H.,
« Evaluating ecological sanitation systems (EvaSan) for handling human waste ». Jordforsk, Norwegian Center for Soil and Environmental Research, As, Norway, p. 111 p. : fig., tab., 1999.
P. Kolsky et Cave, B.,
« Groundwater, latrines and health », vol. no. 163. Water and Environmental Health at London and Loughborough (WELL), London, UK, p. viii, 29 p. : 6 boxes, 4 fig., 9 tab., 1999.
N. R. Mudege et Mujuru, L.,
« Integrated water supply and sanitation project : evaluation report ». Institute of Water and Sanitation Development, Harare, Zimbabwe, p. 41, [18] p. : 2 boxes, fig., tab., 1999.
G. Howard,
« On-site sanitation and groundwater : the art of balancing unknown risks? »,
Waterlines, an international journal of water, sanitation and waste, p. p. 2-5 : 3 photogr., 1999.
M. S. Islam, Lawrence, A. R., Macdonald, D., et Ahmed, K. M.,
« Pit latrines : a source of contamination in peri-urban Dhaka? »,
Waterlines, an international journal of water, sanitation and waste, p. p. 6-8 : 2 fig., 1 photogr., 1999.
U. Frohlich,
« Private sector - just a new hope? : report on the 15th AGUASAN workshop June 28 - July 2, 1999 ». SKAT (Swiss Centre for Development Cooperation in Technology and Management), St. Gallen, Switzerland, p. ca. 100 p. : fig., photogr., 1999.
UNICEF -New York, NY, US. Water and Environmental Sanitation Section,
« Report on knowledge, attitude and practices of communities in Nigeria ». UNICEF Water, Environment and Sanitation Section, New York, NY, USA, p. iii, 74 p. : photogr., tabs, 1999.
World Bank -Washington, DC, US,
« Water and sanitation », in
Tanzania : social sector review, 1999, p. p. 160-179 (Chapter 8) : 3 boxes, 11 tab.