1991
S. Vigneswaran, Vigneswaran, B., y 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.
W. Takken, Snellen, W. B., Verhave, J. P., Knols, B. G. J., y 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.
S. A. Esrey,
«Interventions for the control of diarrhoeal diseases among young children : fly control». World Health Organization, Diarrhoeal Diseases Control Programme, Geneva, Switzerland, p. 19 p.: 5 tab, 1991.
B. A. Janonis, Logsdon, G. S., Collins, M. R., Barrett, J. M., Bryck, J. M. G., y Hendricks, D.,
Manual of design for slow sand filtration. Denver, CO, USA: American Water Works Association, 1991, p. xxxv, 247 p.: fig., tab.
J. E. Gould,
Rainwater catchment systems for household water supply, vol. no. 32. Bangkok, Thailand: Environmental Sanitation Information Center, ENSIC, 1991, p. iii, 57 p.: 12 fig., 14 photogr., 4 tab.
T. S. Katko,
«Reselling and vending water»,
Journal American Water Works Association, pp. p. 63-69: fig., tab., photogr., 1991.
N. R. Anguera,
«Scabies an uneasy and underestimated infectious skin disease». London School of Hygiene and Tropical Medicine, London, UK, p. 38 p., 1991.
A. G. Tipple,
«Self-help transformations : infrastructure issues», in
Infrastructure, environment, water and people : proceedings of the 17th WEDC Conference, United Nations Centre for Human Settlement (Habitat), Nairobi, Kenya, 19-23 August 1991, 1991, pp. P. 45-48.
J. Kinnear y Cairncross, S.,
«Water vending in urban Sudan»,
International journal of water resources development, pp. p. 267-273: 1 fig., 1 tab., 1991.