1991
B. van Hemert, Haemhouts, J., O. Galiz, A., and O. Orozco, S.,
“La bomba de mecate : el desafio de la tecnologia popular”. Nicaragua, Direccion de Acueductos Rurales, Juigalpa, Nicaragua, p. 213 p.: 52 fig., 26 tab., photogr., 1991.
T. F. Bastemeijer and Lee, M. D.,
“La protection des sources d'eau potable”. IRC, The Hague, The Netherlands, p. 21 p.: fig., tab., 1991.
A. Menendez and Silva, M.,
“La provision de agua potable a los barrios perifericos de San Bernardo : estudio de caso”, vol. 830/010. World Bank, Economic Development Institute, Washington, DC, USA, p. 25 p. : ill , tab., 1991.
J. P. Chippaux and Larsson, R. W.,
“L'absenteisme scolaire lie a la dracunculose au Benin”,
Bulletin de la Societe de Pathologie Exotique, pp. p. 775-782 : 2 fig., 3 tab., 1991.
R. K. Sivanappan,
Land and water resources and rural development in India : situation and prospects, vol. no. 16. Linkoping, Sweden: Linkoping University, Department of Water and Environmental Studies, 1991, p. 36 p. : 15 tab.
A. Asnake,
“Leakage control in water distribution system of Addis Ababa”, vol. no. 38. Tampere University of Technology, Institute of Water and Environmental Engineeri, Tampere, Finland, p. 79 p. : 13 fig., 15 tab., 1991.
H. Beckmann and Gardien, N.,
“L'eau c'est la vie : hydraulique villageoise en zone de foret”. Herbert Beckmann, Kleinheubach/Main, Germany, p. 91 p.: photogr., tech. drwngs, 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 and 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.
M. Bapat, Crook, N., and Clarkson, D.,
“Letters : [David Clarkson's reaction to "Behind the technical approach to slum improvement", Waterlines, vol. 8, no. 1, July 1989, and authors' reply]”,
Waterlines, an international journal of water, sanitation and waste, pp. p. 31-32: photogr., 1991.