K. E. Kemper,
The cost of free water : water resources allocation and use in the Curu Valley, Ceara, Northeast Brazil, vol. no. 137. Linkoping, Sweden: Linkoping University, Department of Water and Environmental Studies, 1996, p. 230 p.: fig., tab.
G. J. Alaerts, Buiteman, J. P., y Ahsan, T.,
«Direct horizontal-flow roughing filtration. Part II : performance, and operational guideline»,
Aqua : journal of water supply research and technology, pp. p. 281-291 : 4 fig., 6 tab., 1996.
U. Stoll,
Municipal sewage sludge management, vol. no. 39. Bangkok, Thailand: Environmental Systems Information Center, 1996, p. 83 p. : fig., tech. drwngs., tab.
A. M. Lenehan,
«The spring-box solution - choosing the right water supply technology for southern KwaZulu Natal»,
Waterlines, an international journal of water, sanitation and waste, pp. p. 27-29 : 1 fig., 4 photogr., 1996.
D. D. Mara, Pearson, H. W., Silva, S. A., de Oliveira, R., Oragui, J. I., y Cawley, L. R.,
Wastewater storage and treatment reservoirs in Northeast Brazil, vol. no. 12. Leeds, UK: University of Leeds, Department of Civil Engineering, 1996, p. viii, 34 p. : 7 fig., 21 tab.