Results of spirit leveling in Illinois, 1909 and 1910 /

Bibliographic Details
Main Author:	Marshall, R. B. (Robert Bradford), 1867-1949 (Author)
Format:	Government Document eBook
Language:	English
Published:	Washington, D.C. : Department of the Interior, United States Geological Survey, 1911.
Series:	Bulletin (Geological Survey (U.S.)) ; no. 493.
Subjects:	Altitudes. Illinois > Altitudes. Illinois.
Online Access:	https://purl.fdlp.gov/GPO/gpo61285

Description
Item Description:	Title from title screen (viewed June 30, 2014). "Work done in cooperation with the State of Illinois."
Physical Description:	1 online resource (115 pages, I page of plates) : illustrations.
Bibliography:	Includes index.