Geologic map of the Topton quadrangle, Lehigh and Berks counties, Pennsylvania /

Bibliographic Details
Corporate Author:	Geological Survey (U.S.)
Other Authors:	Drake, Avery Ala, 1927-
Format:	Government Document Map
Language:	English
Published:	Reston, Va. : The Survey ; 1987.
Series:	Geologic quadrangle map ; GQ-1609.
Subjects:	Geology > Pennsylvania > Lehigh County > Maps. Geology > Pennsylvania > Berks County > Maps.

Evans: Maps File (2nd floor)