Engineering and legal aspects of land drainage in Illinois.


At head of title: State of Illinois. Department of registration and education. Division of the State Geological Survey. Frank W. De Wolf, chief.Map folded in pocket.Includes bibliographical references.pt. 1. Status of drainage, September, 1920 / by G.W. Pickels -- pt. 2. Engineering problems / by G.W. Pickels -- pt. 3. Legal problems / by F.B. Leonard, Jr. -- pt. 4. State aid / by G.W. Pickels

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