The geological story of Pennsylvania
By: by John H. Barnes and W.D. Sevon
Contributors: Sevon, William D., author
Edition: Fourth edition.
Series: Educational series -- 4
Publisher: Commonwealth of Pennsylvania, Dept. of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey
Published: 2014
Place of publication: Harrisburg
Language: eng
Number of pages: 44
Subjects: Geology; Popular works
Notes: "Fourth series."