World Bank -Washington, DC, US y Water and Sanitation Program -Washington, DC, US, WSP,
«Community water supply and sanitation conference, the World Bank, Washington DC, May 5-8, 1998 : proceedings». UNDP-World Bank Water and Sanitation Program, Washington, DC, USA, p. 29 p. : fig., photogr., 1998.
S. Lahiri, Lambertus, A., y Cong, T. N.,
«Mutual learning from field mission in Indonesia». World Bank Regional Water and Sanitation Group for East Asia and the Pacific, Jakarta, Indonesia, p. 4 p. : 1 box, 1 map, 4 photogr., 1998.
WHO. Regional Office for South-East Asia -New Delhi, IN, SEARO,
«Regional consultation on new approach to sanitation, Pokhara, Nepal, 17-19 November 1998». World Health Organization (WHO), Pokhara, Nepal, p. 280 p., 1998.
UN Economic Commission for Asia and the Pacific -Bangkok,TH, ESCAP,
«Sources and nature of water quality problems in Asia and the Pacific». United Nations, New York, NY, USA, p. ix, 164 p. : 2 fig., 23 p., 1998.
UNICEF -New York, NY, US. Water and Environmental Sanitation Section,
«UNICEF workshop on environmental sanitation and hygiene, New York, 10-13 June 1998». UNICEF, New York, NY, USA, p. ca. 350 p. : fig., photogr., 1998.
World Congress -Woburn, MA, US,
«Water supply and wastewater summit», in
Global infrastructure development : world markets in 1999, 1998, pp. P. 98-136 : fig.