Field notes in Delaware County
By: by C.E. Hall.
Contributors: Geological Survey of Pennsylvania.
Series: Report of progress / Geological Survey of Pennsylvania -- C5, pt. 1; Report of progress (Geological Survey of Pennsylvania) -- C5, pt. 1
Publisher: Board of Commissioners for the Second Geological Survey
Published: 1885
Place of publication: Harrisburg
Language: eng
Number of pages: 128
Subjects: Geology -- Pennsylvania -- Delaware County