Title: Aeromagnetic and generalized geologic map of Southeastern Pennsylvania /
Authors: Bromery, Randolph Wilson, 1926-; Griscom, Andrew.; Geological Survey (U.S.)
Publisher: The Survey,
Year: 1967
Subjects: Geomagnetism Pennsylvania Maps.; Geology Pennsylvania Maps; Pennsylvania Maps
Contents: Sheet 1. West half -- sheet 2. East half.