Guidebook to the geology of the Pennsylvania turnpike, by A. B. Cleaves and Geo. H. Ashley.
|Main Author:||Cleaves, Arthur Bailey, 1905-|
|Other Authors:||Ashley, Geo. H. b. 1866,|
Harrisburg, Pa., Dept. of Internal Affairs, Topographic and Geologic Survey, 1942.
Pennsylvania Turnpike (Pa.)
iv, 37 p.
illus. (incl. maps) plates.
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