Guide to the geology from Dauphin to Sunbury /

Bibliographic Details
Main Author:	Willard, Bradford, 1894-
Format:	Book
Language:	English
Published:	Harrisburg, Pa. : Department of Internal Affairs, Topographic and Geologic Survey, 1939.
Series:	Bulletin (Pennsylvania. Bureau of Topographic and Geologic Survey) ; G13.
Subjects:	Geology > Pennsylvania > Northumberland County. Geology > Pennsylvania > Dauphin County.

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