The undeveloped mineral resources of Pennsylvania /

Bibliographic Details
Main Author:	Ashley, Geo. H. (George Hall), 1866-1951
Format:	Book
Language:	English
Published:	Harrisburg, Pa. : Department of internal affairs, Topographic and geologic survey, 1933.
Series:	Bulletin (Pennsylvania. Bureau of Topographic and Geologic Survey) ; M18a.
Subjects:	Mines and mineral resources > Pennsylvania.

Description
Item Description:	At head of title: Pennysylvania. Geological survey. Fourth series.
Physical Description:	16 pages including tables ; 23 cm.