The ancient volcanic rocks of South mountain, Pennsylvania /

Bibliographic Details
Main Author:	Bascom, F. (Florence), 1862-1945 (Author)
Format:	Government Document eBook
Language:	English
Published:	Washington, D.C. : Department of the Interior, United States Geological Survey, 1896.
Series:	Bulletin of the United States Geological Survey ; no. 136.
Subjects:	Petrology > Pennsylvania. Igneous rocks. Crystallography. Rocks > Analysis. Petrology. Pennsylvania.
Online Access:	https://purl.fdlp.gov/GPO/gpo58503

Description
Item Description:	Title from title screen (viewed June 24, 2014).
Physical Description:	1 online resource (124 pages, XXVIII pages of plates) : illustrations, maps.
Bibliography:	Includes bibliographical references and index.