Title: Need for replacement and rehabilitation of locks and dams on the Monongahela, Allegheny, and Ohio rivers
First published: 1982
Subjects: Dams, Locks (Hydraulic engineering)
Places: Monongahela River (W. Va. and Pa.), Ohio River, Allegheny River (Pa. and N.Y.)
LC classification: KF27 .P8968 1982a