Não informado. (1961). Effluent and water treatment journal. Thunderbird Enterprises.
Lua i Stíl Chicago (17ú heag.)Não informado. Effluent and Water Treatment Journal. London: Thunderbird Enterprises, 1961.
Lua MLA (8ú heag.)Não informado. Effluent and Water Treatment Journal. Thunderbird Enterprises, 1961.
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