Hawkins, P.M.

Curtis, C.F., Hawkins, P.M. & Keto, A.J., 1983. A trial of insect traps for pit latrines in Dar es Salaam, London, UK: London School of Hygiene and Tropical Medicine. Available at: https://es.ircwash.org/sites/default/files/321.4-3479.pdf.