Steel, E. W. (1953). Water supply and sewerage (3th. ed.). McGraw-Hill.
Cita Chicago Style (17a ed.)Steel, Ernest W. Water Supply and Sewerage. 3th. ed. McGraw-Hill, 1953.
Cita MLA (9a ed.)Steel, Ernest W. Water Supply and Sewerage. 3th. ed. McGraw-Hill, 1953.
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