Macdonald, D.

Islam, M.S. e.a., 1999. Pit latrines : a source of contamination in peri-urban Dhaka?. , pp.p. 6-8 : 2 fig., 1 photogr. Available at: https://nl.ircwash.org/sites/default/files/Macdonald-1999-Pit.pdf.