Geologic map of Pennsylvania : Pennsylvania Geologic Survey, 4th ser /

Bibliographic Details
Corporate Author:	Pennsylvania. Bureau of Topographic and Geologic Survey
Other Authors:	Gray, Carlyle
Format:	Map
Language:	English
Published:	[Harrisburg], [publisher not identified] ; [1960]
Subjects:	Geology > Pennsylvania > Maps.

Description
Item Description:	Issued in envelope. "Base compiled from Army Map Service 1:250,000 scale map sheets." Includes 4 col. cross sections and "Source of date index map." Cartographic material.
Physical Description:	color map ; 145 x 201 cm. on 2 sheets 149 x 105 cm. folded to 28 x 21 cm.