“The drinking water supply and waste water disposal in Sana'a, YAR : a problem still to be solved”, in
International symposium, 24-29 April 1988 : hydrological processes and water management in urban areas : proceedings of the conference, 1988, pp. P. 811-813: fig.
A. Suki, Jenny, H., and Rashid, M. D.,
“Efficiency of oxidation ponds”, in
The proceedings of the 14th WEDC Conference : water and urban services in Asia and the Pacific : Kuala Lumpur, 11-15 April 1988, 1988, pp. p. 42-45: fig., tab.
L. A. St. Michel and Pincince, A. B.,
“Evaluation of alternatives for interim treatment and disposal of trucked wastewater in Salalah town, sultinate of Oman”, vol. no. 243. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. VII, 26 p. + app.: fig.,tab., 1988.