A section of the Paleozoic formations of the Grand Canyon at the Bass Trail /

Bibliographic Details
Main Author:	Noble, L. F. (Levi Fatzinger), 1882-1965 (Author)
Format:	Government Document eBook
Language:	English
Published:	[Washington] : [Department of the Interior, United States Geological Survey], [1923]
Series:	Professional paper (Geological Survey (U.S.)) ; no. 131-B. Shorter contributions to general geology ; 1922.
Subjects:	Formations (Geology) > Arizona > Grand Canyon. Geology, Stratigraphic > Paleozoic. Grand Canyon (Ariz.) Geology. Geology, Stratigraphic. Paleozoic Geologic Period. Arizona > Grand Canyon. From 230 to 570 million years ago
Online Access:	https://purl.fdlp.gov/GPO/gpo79854

Description
Item Description:	Title from title screen (viewed September 22, 2014). Report number from USGS web site.
Physical Description:	1 online resource (59 unnumbered pages) : illustrations, maps.
Bibliography:	Includes bibliographical references.