Beaver and Mahoning rivers, Pa. and Ohio Hearings before the Committee on rivers and harbors, House of representatives, Seventy-seventh Congress, first session, on the subject of the improvement of the Beaver and Mahoning rivers, Pa. and Ohio, September 30, October 1, 2, 3, and 6, 1941.
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington :
U.S. Govt. print off.,
1941
Washington, 1941 |
| Subjects: |