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Principles of sewage treatment.

By Dunbar, William Philipps,.
London, C. Griffin & company, limited, 1908 .
xxiii, 271 p. , Translation of Leitfaden für die Abwasserreinigungsfrage.

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William Dunbar letterbook extracts and a list of manuscripts,

By Dunbar, William,.
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Message from the President of the United States, communicating discoveries made in exploring the Missouri, Red River and Washita, by Captains Lewis and Clark, Doctor Sibley, and Mr. Dunbar : with a statistical account of the countries adjacent.

By United States..
City of Washington : A.&G. Way, printers, 1806 .
171, [7] p., [3] folded leaves of plates : , "February 19, 1806. Read, and ordered to lie on the table." | Tables on two folded leaves of plates. 22 cm..

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