The ancient volcanic rocks of South Mountain, Pennsylvania
By: by Florence Bascom
Series: 54th Congress, 1st Session. House of Representatives. Document -- no. 421; Bulletin of the United States Geological Survey -- no. 136; Nineteenth Century Collections Online: Science, Technology, and Medicine, Part I; House document (United States. Congress. House) -- 54th Congress, 1st session, no. 421.; Bulletin of the United States Geological Survey -- no. 136.; Nineteenth Century Collections Online: Science, Technology, and Medicine, Part I
Publisher: G.P.O.
Published: 1896
Place of publication: Washington
Language: eng
Format: [electronic resource] /
Number of pages: 124
Subjects: Petrology; Igneous rocks
Notes: Advertising: p. [i]-vii, 2nd count.

Reproduction of the original from the Library of Congress.