Cover Image

Telling time at Grand Canyon National Park : 2020 update /

Bibliographic Details
Main Author: Karlstrom, Karl E. (Author)
Format: Government Document eBook
Language:English
Published: Fort Collins, Colorado : U.S. Department of the Interior, National Park Service, Natural Resource Stewardship and Science, 2021.
Series:Natural resources report ; 2021/2246.
Subjects:
Geological time.
Geology > Arizona > Grand Canyon National Park.
Historical geology > Arizona > Grand Canyon National Park.
Online Access:https://purl.fdlp.gov/GPO/gpo176936
Description
Item Description:"April 2021."
"NPS 113/175197"--Page ii.
GPO Cataloging Record Distribution Program (CRDP).
Physical Description:1 online resource (xiv, 36 pages) : color illustrations, color maps.
Bibliography:Includes bibliographical references (pages 33-35).