10⁹ years
Subtitle: a guide to the geology of Westchester County, New York
By: Thomas McGuire ; with a local geologic history by Yngvar Isachsen
Contributors: Isachsen, Ingvar W., 1920-
Edition: 1st ed.
Series: Special publication / Rochester Mineralogical Symposium -- #10; Special publication (Rochester Mineralogical Symposium) -- no. 10
Publisher: Rochester Mineralogical Symposium
Published: 1991
Place of publication: Rochester, N.Y
Language: eng
Number of pages: 134
Subjects: Geology; Guidebooks; History
Other titles: Ten to the ninth power years.; 1,000,000,000 years.; One billion years.
Notes: Chapter 1 by Yngvar Isachsen entitled: The geologic history of Westchester County (12 p.).

Includes bibliographical references.