Administrative report
By: by Geo. H. Ashley.
Publisher: Dept. of Internal Affairs, Topographic and Geologic Survey
Published: 1931
Place of publication: Harrisburg, Pa
Language: eng
Number of pages: 38
Subjects: Pennsylvania.  Geological Survey, 4th, 1919- -- Bibliography
Notes: At head of title: The Pennsylvania Geological Survey.

Bibliographical references.