Pennsylvania and the ice age /

Bibliographic Details
Main Author:	Sevon, William D.
Other Authors:	Fleeger, Gary M. (Gary Mark)
Format:	Book
Language:	English
Published:	Harrisburg : Pennsylvania Geological Survey, 1999.
Edition:	2nd ed.
Series:	Educational series (Pennsylvania. Bureau of Topographic and Geologic Survey) ; 6.
Subjects:	Glacial epoch > Pennsylvania. Geology, Stratigraphic > Pleistocene.