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You searched for: All Subjects Dams--Ohio River--Maps. Remove constraint All Subjects: Dams--Ohio River--Maps.
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1. Navigation on our three rivers.

Creator Corporate Names:
United States. Army. Corps of Engineers. Pittsburgh District.
Title:
Navigation on our three rivers.
Call Number:
P21113
Date:
undated
Description:

Brochure.

Subject Topical:
Locks (Hydraulic engineering)--Allegheny River (Pa. and N.Y.)--Maps., Locks (Hydraulic engineering)--Monongahela River (W. Va. and Pa.)--Maps., Dams--Pennsylvania--Pittsburgh Region--Maps., Dams--Monongahela River (W. Va. and Pa.)--Maps., Locks (Hydraulic engineering)--Pennsylvania--Pittsburgh Region--Maps., Dams--Ohio River--Maps., Locks (Hydraulic engineering)--Pennsylvania--Pittsburgh Region--Pictorial works., Locks (Hydraulic engineering)--Ohio River--Maps., Dams--Allegheny River (Pa. and N.Y.)--Maps., Boats and boating--Pennsylvania--Pittsburgh Region--Maps.
All:
Locks (Hydraulic engineering)--Allegheny River (Pa. and N.Y.)--Maps., Locks (Hydraulic engineering)--Monongahela River (W. Va. and Pa.)--Maps., Dams--Pennsylvania--Pittsburgh Region--Maps., Dams--Monongahela River (W. Va. and Pa.)--Maps., Locks (Hydraulic engineering)--Pennsylvania--Pittsburgh Region--Maps., Dams--Ohio River--Maps., Locks (Hydraulic engineering)--Pennsylvania--Pittsburgh Region--Pictorial works., Locks (Hydraulic engineering)--Ohio River--Maps., Dams--Allegheny River (Pa. and N.Y.)--Maps., Boats and boating--Pennsylvania--Pittsburgh Region--Maps.