Philadelphia folio, Norristown, Germantown, Chester, and Philadelphia quadrangles, Pennsylvania--New Jersey--Delaware
By: [By F. Bascom, W.B. Clark, N.H. Darton, H.B. Kümmel, R.D. Salisbury, B.L. Miller, and G.N. Knapp]
Edition: Library ed.
Series: United States. Geological Survey. Geologic atlas of the United States -- no. 162; Geologic atlas of the United States -- fol. 162
Publisher: U.S. Geological Survey
Published: 1909
Place of publication: Washington, D.C
Language: eng
Number of pages: 23
Subjects: Geology; Maps
Notes: Cover title.