Relation of the Wissahickon Mica Gneiss to the Shenandoah Limestone and  Octora Schist of the Doe Run and Avondale Region, Chester County, pa.
Contributors: Bliss, E.
Series: U.S. Geological Survey professional paper -- 98-B
Publisher: s.n
Published: 1917
Place of publication: S.l
Language: eng
Notes: 1