Biblio

G. Hutton, Chuan, L., Liqiong, Y., and Weitz, A., “The economic returns of sanitation interventions in Yunnan province, People’s Republic of China [summary]”. Water and Sanitation Program, WSP, Washington, DC, USA, p. 6 p. : 5 fig., 2011.

G. Hutton and Bartram, J., “Global costs of attaining the Millennium Development Goal for water supply and sanitation”, Bulletin of the World Health Organization, pp. p. 13-19 : 2 fig., 1 tab., 2008.