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  • Location Covered = llegney County, PA.
  • Subject = Bridges -- Pennsylvania -- Pittsburgh -- History.
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The bridges of Pittsburgh
The bridges of Pittsburgh and Allegheny County / Robert J. Gangewere.
Bridges -- Pennsylvania -- Pittsburgh -- History., Bridges -- Pennsylvania -- Allegheny County -- History, Pittsburgh (Pa.) -- Buildings, structures, etc, Allegheny County (Pa.) -- Buildings, structures, etc.
36 pages : illustrations 29 cm.