1999
G. M. V., G. C., G., y Gijzen, H.,
Agua 98 : conferencia internacional agua y sostenibilidad, Santiago de Cali, Colombia, Junio 1 al 3 de 1998 : [memorias]. Cali, Colombia: CINARA, 1999, p. 352 p. : fig., tab.
J. P. Canler, Perret, J. M., Duchene, P., y Cotteux, E.,
«Aide au diagnostic des stations d'épuration par l'observation microscopique des boues activés». CEMAGREF Editions, Cahors, France, p. 155 p. : fig., tabs., 1999.
R. Jani,
«Andhra Pradesh water and environment sanitation sector development : institutional analysis». United Kingdom, Department for International Development, New Delhi, India, p. ca. 44 p. : fig., 1999.
S. Wilson,
«Andhra Pradesh water resources scoping study - final report». United Kingdom, Department for International Development, London, UK, p. ca. 70 p. : maps, tabs., 1999.
M. Tounkara y Doffou, D.,
«Annexe (1388.1)». Centre Regional pour l'Eau Potable et l'Assainissement a Faible Cout (CREPA), Ouagadougou, Burkina Faso, p. 63 p., 1999.
«Annual review : 1999»,
Environment matters at the World Bank. 1999.
I. Palmer y Pegram, G. C.,
The applicability of shallow sewer systems in South Africa, vol. no. TT113/99. Pretoria, South Africa: Water Research Commission, WRC, 1999, p. ix, 51 p. : 7 fig., 8 tab., 6 photogr.
United Nations Economic and Social Commission for Western Asia -Beirut, LB, ESCWA,
«Application of satellite remote-sensing methods for hydrogeology in the ESCWA region». United Nations, New York, NY, USA, p. iv, 311 p. fig., maps, 1999.
J. Carlsson, Eriksson-Baaz, M., Fallenius, A. M., y Lovgren, E.,
Are evaluations useful : cases from Swedish development co-operation, vol. no. 99/1. Stockholm, Sweden: SIDA, Swedish International Development Cooperation Agency, 1999, p. 66 p. : tab.
T. Ningnoi,
«Arsenic removal from groundwater by conditioned zeolite», vol. no. 081. IHE (International Institute for Infrastructural, Hydraulic and Environmental Engineering), Delft, The Netherlands, p. 54 p. : fig., tab., 1999.
B. D. U. N. I. C. E. F. - Dhaka y BD, D. P. H. E. Bangladesh,
«Arsenic tv-spots : Bangladesh». Bangladesh, Department of Public Health Engineering (DPHE), Dhaka, Bangladesh, p. video ( min.) : VHS/Pal, 1999.
Ostertech -Phoenixville, PA, US, Highsmith Environmental Consultants -Atlanta, GA, US, Solmetex -Northborough, MA, US, y Group, I. Capital Co,
«Arsen:X tm Systems». Ostertech, Phoenixville, PA, USA, p. ca. 15 p. : tab., techn.drwngs, 1999.
N. Hamid y Villareal, M. R.,
«Asian cities in the 21st century : contemporary approaches to municipal management. Volume II. Municipal management issues in South Asia : proceedings of a seminar in Lahore, Pakistan, 16-18 October 1997». Asian Development Bank, Manila, Philippines, p. vii, 183 p. : fig., tab., 1999.
S. Huq y Hamid, N.,
«Asian cities in the 21st century : contemporary approaches to municipal management. Volume III. Reforming Dhaka city management : papers presented at a seminar in Dhaka, Bangladesh, 15-17 March 1998». Asian Development Bank, Manila, Philippines, p. v, 89 p. : fig., tab., 1999.