Clay and shale resources in Pennsylvania
By: by Henry Leighton
Contributors: Pennsylvania. Bureau of Topographic and Geologic Survey
Series: Pennsylvania. Bureau of Topographic and Geologic Survey. Bulletin -- M23; Bulletin M -- 23.
Publisher: Department of Internal Affairs, Topographic and Geologic Survey
Published: 1941
Place of publication: Harrisburg, Pa
Language: eng
Number of pages: 245
Subjects: Clay; Shale; Mines and mineral resources
Notes: Includes index.

Includes bibliographies.