P. Roark, Gearheart, R. A., Jennings, L., Finney, B. A., and McKee, M.,
“Workshop on wastewater treatment for small communities in the Middle East”, vol. no. 435. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. viii, 48 p.: 10 photogr. + brochure (8 p.), 1993.