Kingdom, W. D. (2005). Models of aggregation for water and sanitation provision. Washington DC: World Bank.
Trích dẫn kiểu ChicagoKingdom, William D. Models of Aggregation for Water and Sanitation Provision. Washington DC: World Bank, 2005.
MLA CitationKingdom, William D. Models of Aggregation for Water and Sanitation Provision. Washington DC: World Bank, 2005.
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