PA. AND OHIO HEARINGS BEFORE THE COMMITTEE ON RIVERS AND HARBORS US Congres HOUSE OF REPRESENTATIVES SEVENTY-SEVENTH CONGRESS FIRST SESSION ON THE SUBJECT OF THE IMPROVEMENT OF THE BEAVER AND MAHONING RIVERS, 63757 SEPTEMBER 30, OCTOBER 1, 2, 3, AND 6, 1941 Printed for the use of the Committee on Rivers and Harbors UNITED STATES WASHINGTON: 1941 |