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Relation of the Wissahickon Mica-gneiss to the Shenandoah Limestone and to the Octoraro Mica-schist, of the Doe Run-Avondale District, Coatesville, Quadrangle, Pennsylvania ...

Eleanora Frances Bliss KnopfAnna Isabel Jonas

出版	Bryn Mawr college, 1914
URL	http://books.google.com.hk/books?id=PNe7AAAAIAAJ&hl=&source=gbs_api