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Towards an ecological approach to sanitation / Uno Winblad.
- Swedish international development cooperation agency (Sida),
- 1997.
- Stockholm :
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Ecological alternatives in sanitation : proceedings... / [comp. by] Jan-Olof Drangert, Jennifer Bew, Uno Winblad.
- Swedish international development cooperation agency (Sida),
- 1997.
- Stockholm :