Obsidian Cliff, Yellowstone National Park
By: by Joseph P. Iddings
Series: Nineteenth Century Collections Online: Science, Technology, and Medicine, Part I; Nineteenth Century Collections Online: Science, Technology, and Medicine, Part I
Publisher: Govt. Print. Off
Published: 1888
Place of publication: Washington
Language: eng
Number of pages: 295
Subjects: Obsidian; Petrology
Other titles: Geological Survey (U.S.)
Notes: Cover-title.

Extract from the 7th annual report of the Director of the U.S. Geological Survey, 1885-86.

Reproduction of the original from the Library of Congress.

Includes bibliographical references.