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America's industrial heritage southwestern Pennsylvania.

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Bibliographic Details
Corporate Author: United States. National Park Service
Format: Book
Language:English
Published: [Washington, D.C.?] : U.S. Dept. of the Interior, National Park Service, [1991]
Physical Description:
24 unnumbered pages : illustrations, maps ; 24 cm.
Subjects:
Holdings details from CMU Storage Gov Pub C502
Copy 1 CMU Storage Gov Pub I 29.2:In 2/13 Available