Biblio

J. M. Kalbermatten, Julius, D. S., y Gunnerson, C. G., Appropriate sanitation alternatives : a technical and economic appraisal, vol. 1. Baltimore, MD, USA: Johns Hopkins University Press, 1982, p. xii, 115 p.: fig., maps, tab.

J. M. Kalbermatten, Julius, D. S., y Gunnerson, C. G., «Appropriate technology for water supply and sanitation : a summary of technical and economic options», vol. no. 1-A. World Bank, Washington, DC, USA, p. viii, 40 p.: fig., tab., photogr., 1980.