1991
R. W. Robbins, Glicker, J. L., Bloem, D. M., y Niss, B. M.,
«Effective watershed management for surface water supplies»,
Journal American Water Works Association, pp. p. 34-44: 5 fig., 7 tab., photogr., 1991.
M. J. R.,
«El codigo de aguas de la Republica de Chile, en el marco de uno economia social de mercado», in
International Seminar on Efficient Water Use : proceedings = Seminario Internacional sobre el Uso Eficiente del Agua : ponencias, 1991, pp. P. 511-519.
UNDTCD -New York, NY, US,
Ground water in Western and Central Europe, vol. no. 27. New York, NY, USA: United Nations, 1991, p. xxvi, 363 p.: 71 fig., 62 tab.
T. Z. H. E. S. A. W. A. - Mwanza,
«HESAWA and gender awareness : participants manual». Health through Sanitation and Water (HESAWA), Mwanza, Tanzania, p. 33 p.: ill., fig., 1991.
Netherlands. Ministry of Housing, Spatial Planning and the Environment -NL, VROM,
Individuele behandeling van afvalwater bij verspreide bebouwing (IBA) : onderzoek fase 4B : IBA richtlijn, vol. no. 1991/7. The Hague, The Netherlands: Netherlands, Ministry of Housing, Spatial Planning and the Environment, 1991, p. 186 p. : fig., tab.
J. Hukka y Viitasaari, M.,
«Industrial wastewaters '89 Nairobi : proceedings of the first IAWPRC East African regional conference on industrial wastewaters, held in Nairobi, Kenya, 25-28 October 1989». Pergamon, Oxford, UK, p. xiv, 106 p.: fig., tab., 1991.
M. X. Comision N. City, Jiutepec, M. X. Instituto, y IWRA -Urbana, IL, US,
«International Seminar on Efficient Water Use : proceedings». Comision Nacional del Agua, Mexico City, Mexico, p. 938 p.: fig., tab., 1991.
F. R. Compagnie Paris,
L'eau et les collectivites locales. Paris, France: Moniteur, 1991, p. 332 p. : fig., photogr., tab.
UNDTCD -New York, NY, US,
«Legislative and economic approaches to water demand management». United Nations DTCD,Water Resources Branch, New York, NY, USA, p. vi, 58 p.: 1 tab., 1991.
F. R. France. Mi Paris y Toulouse, F. R. Agence de,
Les elus locaux et l'assainissement, vol. no. 1. Paris, France: France, Ministere de l'Environnement, 1991, p. 48 p.: fig., photogr., tab.
UN-HABITAT -Nairobi, KE, United Nations Human Settlements Programme,
«Management of water resources for urban use : report of an expert group meeting : Washington DC, 22-24 April 1991». UN-Habitat, United Nations Centre for Human Settlements, Nairobi, Kenya, p. 15 p.: 1 box, 2 tab., 1991.
S. Burchi,
«The need for effective legal and regulatory frameworks». Food and Agriculture Organization (FAO), Rome, Italy, p. 6, [4] p., 1991.
N. G. N. E. S. T. - Ibadan,
Nigeria's threatened environment : a national profile. Ibadan, Nigeria: Nigerian Environmental Study / Action Team, 1991, p. vi, 288 p.: fig., photogr., tab.
F. W. Pontius,
«Phase II organic and inorganic contaminant regulations»,
Journal American Water Works Association, pp. p. 20-22, 77-79: 8 tab., 1991.
D. M. Nielsen,
Practical handbook of ground-water monitoring. Chelsea, MI, USA: Lewis, 1991, p. x, 717 p.: fig., tab.
P. C. Tyagi, Ranganathan, K. R., Chakrabarti, S. P., y Basu, D. D.,
«Protection of water resources : Indian experience»,
Aqua : journal of water supply research and technology, pp. p. 357-370: 9 fig., 4 tab., 1991.
O. B. Kaplan,
Septic systems handbook, 2nd ed.ª ed. Chelsea, MI, USA: Lewis, 1991, p. xx, 434 p.: 56 fig., 28 tab.