Petrography of coal in the Houtzdale quadrangle : Clearfield County, Pennsylvania /

Bibliographic Details
Main Author:	Koppe, Edwin F.
Format:	Book
Language:	English
Published:	Harrisburg, [publisher not identified] ; 1967.
Series:	Bulletin (Pennsylvania. Bureau of Topographic and Geologic Survey) ; M55.
Subjects:	Coal > Geology > Pennsylvania > Houtzdale Region.

Description
Item Description:	"Pennsylvania Geological Survey fourth series."
Physical Description:	vi, 73 pages : illustrations, maps. ; 23 cm.
Bibliography:	Bibliography: page 43.