Ballance, R.M.

Ballance, R.M., 1990. Report on IDWSSD actvities in human resources development, (Booklet / IDWSSD Steering Committee for Cooperative Action 3) Geneva, Switzerland: World Health Organization, Community Water Supply & Sanitation Unit. Available at: http://fr.ircwash.org/sites/default/files/204.2-90RE-7636.pdf.