Dunbar, William Phillips, 1863-1922. Principles of sewage treatment / by Dr. Dunbar ; translated, with the author's sanction, by H.T. Calvert.

Dunbar, William Phillips, 1863-1922.

Principles of sewage treatment / by Dr. Dunbar ; translated, with the author's sanction, by H.T. Calvert.

London : C. Griffin, 1908.

Bibliography: p. xv-xix.

Includes index.

Sewage -- Purification.

Sewage disposal.

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