1991
S. Vigneswaran, Vigneswaran, B., en Ben Aim, R.,
Application of microfiltration for water and wastewater treatment, vol. no. 31. Bangkok, Thailand: Environmental Sanitation Information Center, ENSIC, 1991, p. 184 p.: fig., tab.
J. Pickford,
Developing world water. London, UK: Grosvenor Press, 1991, p. 523 p.: photogr.
EPA -Washington, DC, US,
“Manual of individual and non-public water supply systems”. US Environmental Protection Agency (EPA), Washington, DC, USA, p. vi, 181 p.: fig., tab., 1991.
EPA -Washington, DC, US,
“Manual of small public water supply systems”. US Environmental Protection Agency (EPA), Washington, DC, USA, p. vi, 211 p.: fig., tab., 1991.
F. W. Pontius,
“Phase II organic and inorganic contaminant regulations”,
Journal American Water Works Association, pp. p. 20-22, 77-79: 8 tab., 1991.
G. Craun, Swerdlow, D., Tauxe, R., Clark, R., Fox, K., Geldreich, E., Reasoner, D., en Rice, E.,
“Prevention of waterborne cholera in the United States”,
Journal American Water Works Association, pp. p. 40-45: photogr., 1991.
M. Y. P. E. P. A. S. - Kua Lumpur,
“Regional working group on water supply management”. World Health Organization Environmental Health Centre Western Pacific Region, Kuala Lumpur, Malaysia, p. 34 p., 1991.
M. Siddique, Sack, R. B., Jahangir, A., Nahid, A., Khatoon, H., Hess, J., en Hoque, B. A.,
“Report on technical assistance by ICDDR, B in prevention and management of diarrhoea in cyclone affected areas”. International Centre for Diarrhoeal Disease Research, Bangladesh (ICDDR,B), Dhaka, Bangladesh, p. 10 p., 1991.
A. Derrick, Francis, C., en Bokalders, V.,
Solar photovoltaic products : a guide for development workers, Rev.ed. London, UK: IT Publications, 1991, p. 127 p.: fig., ill., tab.
J. T. Visscher en IRC International Water and Sanitation Centre, The Hague, NL,
“Water and sanitation”, in
Lessons learned in community-based environmental management : proceedings of the primary environmental care workshop, Siena, Italy, 29 January - 2 February 1990, 1991, pp. P. 65-75.
N. L. Nederlands Delft,
“Water : termen en definities”. Nederlands Normalisatie-instituut (NNI), Delft, The Netherlands, p. 51 p., 1991.
1990
F. W. Pontius,
“Complying with the new drinking water quality guidelines”,
Journal American Water Works Association, pp. p. 32-52: tab., 1990.
J. Pickford,
Developing world water. London, UK: Grosvenor Press, 1990, p. 468 p.
EPA -Cincinnati, OH, US,
“Environmental pollution control alternatives : drinking water treatment for small communities”. US Environmental Protection Agency (EPA), Cincinnati, OH, USA, p. vi, 82 p. : fig., photgr., tab., tech drwngs., 1990.
G. B. Environmen Albans,
“International environmental technology”. Environmental Technology (Publications), St. Albans, UK, 1990.