Grove City Airports, Grove City, Pennsylvania
Description of a Loran-C Propagation Anomaly and Associated Coordinate Conversion Problems
Pennsylvania. Rapid Transit System for Port Authority of Allegheny County
Impact on Transit Ridership and Revenue of Reduced Fares for the Elderly
Legislative Route 346, Section 6 (Traffic Route 45), Huntingdon County, Pennsylvania
Greater Pittsburgh International Airport, Pittsburgh, Pennsylvania
Transportation Innovation and Changing Spatial Patterns: Pittsburgh, 1850-1910
Defense Use of Certain Federal Property: Philadelphia Area, Navy
University Park Airport, State College, Pennsylvania
Census of Transportation: 1972. Truck Inventory and Use Survey: Pennsylvania
A Strategy for Urban Mass Transportation Route - Technology Section
Improved Transportation for the Northerly Part of the City of Pittsburgh, Pennsylvania