Não informado. (1961). Water and wastes digest. Scranton Gillette Communications.
Chicago-viite (17. p.)Não informado. Water and Wastes Digest. Chicago, Ill: Scranton Gillette Communications, 1961.
MLA-viite (8. p.)Não informado. Water and Wastes Digest. Scranton Gillette Communications, 1961.
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