Patil, S.

Pattanayak, S.K. et al., 2010. How valuable are environmental health interventions? : evaluation of water and sanitation programmes in India. , pp.p. 535 - 542 : 2 fig., 4 tab. Available at: https://es.ircwash.org/sites/default/files/Pattanayak-2010-How.pdf.