The Pennsylvania survey, 1919-1922
By: by George H. Ashley
Series: Work of the Pennsylvania survey -- 1919-1922; Pennsylvania. Geological survey. Miscellaneous papers -- 2; Work of the Pennsylvania survey -- 1919-1922.
Publisher: State printer
Published: 1923
Place of publication: Harrisburg
Language: eng
Number of pages: 18
Other titles: Work of the Pennsylvania survey, 1919-1922.
Notes: Cover title.