Program of construction of 161-mi highway between Harrisburg and Pittsburgh.
Work starts on south Penn toll road
Eng News-Rec
Engineering News-Record ; 122 , n 1
1939
3 pages
Article (Journal)
English
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British Library Online Contents | 1997
Online Contents | 1997
Work speeded on Penn-Lincoln parkway
Engineering Index Backfile | 1947
|Wiley | 2012
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