Minerals of Pennsylvania
By: by Amos P. Brown and Frederick Ehrenfeld.
Contributors: Ehrenfeld, Frederick, 1872-1940, joint author.
Series: Pennsylvania. Topographic and Geologic Survey. Report; no. 9
Publisher: W. S. Ray
Published: 1913
Place of publication: Harrisburg, Pa
Language: eng
Number of pages: 160
Subjects: Mines and mineral resources -- Pennsylvania.