H. Pinidiya,
«Human waste disposal systems for low-income settlements in Sri Lanka : paper presented at the International Seminar on Human Waste Management for Low Income Settlements, January 16-22, 1983, Bangkok, Thailand», presented at the 1983-01-01, Ratmalana, Sri Lanka, 1983, p. ((28)) p.: fig.,tab.
F. I. Institute Helsinki y Peradeniya, L. K. University,
«Sociocultural dimensions of water supply and sanitation : case study made in Sri Lanka», vol. vol. 3. University of Helsinki, Institute of Development Studies, Helsinki, Finland, p. vi, 309, xxvii p., 1983.
D. Donaldson,
«A technical/managerial review of AID handpump programs in Sri Lanka, the Philippines, Honduras, and the Dominican Republic», vol. no. 29. Water and Sanitation for Health Project (WASH), Arlington, VA, USA, p. viii, 104 p.: fig., tab., photogr., 1983.
A. Kelles-Viitanen,
«Water and wells, symbols of prestige, power and prosperity in a Sinhalese village : a study made in Sri Lanka», vol. vol. 1. University of Helsinki, Institute of Development Studies, Helsinki, Finland, p. iii, 121 p., 1983.