1991
M. Mwangola,
“Ensuring access to clean water by women and children in rural Kenya”. Kenya Water for Health Organization (KWAHO), Nairobi, Kenya, p. 39 p. : 1 fig., 3 map., 1991.
World Bank -Washington, DC, US,
“Environmental assessment sourcebook. Vol. I. Policies, procedures, and cross-sectoral issues”, vol. no. 139. World Bank Environment Department, Washington, DC, USA, p. xv, 227 p. : fig., tab., 1991.
W. Takken, Snellen, W. B., Verhave, J. P., Knols, B. G. J., and Atmosoedjono, S.,
Environmental measures for malaria control in Indonesia : an historical review on species sanitation, vol. 90-7 (1990). Wageningen, The Netherlands: Agricultural University Wageningen, 1991, p. xiii, 167 p.: 25 fig., 34 tab., 13 photogr.
G. McGranahan,
Environmental problems and the urban household in Third World countries. Stockholm, Sweden: Stockholm Environment Institute (SEI), 1991, p. 38 p.: 16 tab.
C. Widstrand and Kemper, K. E.,
“Environmental sanitation in developing countries : a selected and annotated bibliography”, vol. no. 15. Linkoping University, Department of Water and Environmental Studies, Linkoping, Sweden, p. 83 p., 1991.
A. Schellinkhout and Jakma, F. F. G. M.,
“Ervaring met anaerobe zuivering in Bucaramanga, Colombia”, presented at the 1991-06-12, Amersfoort, The Netherlands, 1991, p. 13 p. : fig., tab.
N. L. I. W. A. C. O. - Rotterdam, BF, B. Faso. Mini, and DGIS, D. General fo,
“Etude du bilan d'eau au Burkina Faso : manuel”. Burkina Faso, Direction de l'Inventaire des Ressources Hydrauliques, Ouagadougou, Burkina Faso, p. 2 vol. (83, 26 p.): fig., 1991.
M. Carney,
“European drinking water standards”,
Journal American Water Works Association, pp. p. 48-55: tab., 1991.
F. Gomez, M. Badel, H., and M. Badel, H.,
“Evaluación comparativa de la operación y mantenimiento de filtros lentos en arena a escala piloto que utilizan mantas sintéticas y naturales”. Universidad del Valle, Facultad de Ingenieria, Cali, Colombia, p. 95 p., 1991.
A. M. Sandoval Villasana,
“Evaluacion de filtros de cantera cafe como potabilizadores de agua en zonas rurales”, in
International Seminar on Efficient Water Use : proceedings = Seminario Internacional sobre el Uso Eficiente del Agua : ponencias, 1991, pp. p. 856-859: 2 tab.
J. van der Heide, Orozco, J. G., and van Wasbeek, D.,
Evaluacion hidraulica de plantas potabilizadoras de filtracion rapida en Nicaragua, vol. no. 40. Delft, The Netherlands: Delft University of Technology, Department of Civil Engineering, 1991, p. 34 p. : 16 fig., 7 tab.
M. Yacoob and Cook, T.,
“Evaluating community participation”, vol. no. 98. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. iii, 23 p.: fig., 1991.
M. R. Collins, Eighmy, T. T., and Malley, J. P.,
“Evaluating modifications to slow sand filters”,
Journal American Water Works Association, pp. p. 62-70: 7 fig., 5 tab., photogr., 1991.
R. Middleton, Jennings, L., and Joyce, S. D.,
“Evaluation guidelines for training in water and sanitation”, vol. no. 70. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. v, 38 p.: fig., 1991.