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Sanitation for Low-Income Regions : A Cross-Disciplinary Review
Hyun, Christopher, (2019)
Addressing Citizen-Participation for Sustainable Water & Sanitation Services in Kenya's Low-Income Areas
Koros, Japheth K., (2022)
Long-term trends in income distribution : a global perspective
Obst, Thomas, (2015)
If It Ain't Broke, Don't Let Them Fix It
Mara, Duncan, (2011)
Appropriate technology for water supply and sanitation
(1980)
Technical and economic Options
Kalbermatten, John M., (1980)