Tillman, R.E.

Roark, P., Tillman, R.E. & Robin, W.R., 1988. Domestic water supply and sanitation in irrigation projects, (Wash field report no. 237) Arlington, VA, USA: Water and Sanitation for Health Project (WASH). Available at: https://es.ircwash.org/sites/default/files/245.10-3831.pdf.