Biblio

G. B. Halcrow Gr London and UNICEF -New York, NY, US, “Drawings of rural water supply and sanitation : modules”. UNICEF, New York, NY, USA, p. i, 63 p.: 63 technical drawings, 1989.

C. O. Empresas P. Medellin, Sistemas elementales para el manejo de aguas residuales sector rural y semi-rural, vol. vol. 10, no. 2. Medellin, Colombia: Empresas Publicas de Medellin, 1988, p. 167 p.: fig., tab.

T. A. Dillaha and Zolan, W. J., “A comparative laboratory study of sewage treatment by a capillary siphon trench system versus a conventional leaching trench system”. University of Guam, Guam, p. vii, 18 p.: fig., tab., 1984.

S. K. Runyoro, “Pit latrine emptying”. Loughborough University of Technology, Department of Civil Engineering, Loughborough, UK, p. viii, 94 p.: fig., tab., 1981.