Não informado. (1946). Water and sewage works. Gillette Publishing Company.
Lua i Stíl Chicago (17ú heag.)Não informado. Water and Sewage Works. Chicago, Ill: Gillette Publishing Company, 1946.
Lua MLA (8ú heag.)Não informado. Water and Sewage Works. Gillette Publishing Company, 1946.
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