Keinanen, A.

Keinanen, A., 1983. Environmental hygiene and health factors in rural water supply and sanitation projects : a case study in Sri Lanka, (Water and society : Harispattuwa Water Development Programme vol. 2) Helsinki, Finland: University of Helsinki, Institute of Development Studies. Available at: https://es.ircwash.org/sites/default/files/822-2816.pdf.