2 options
Observations of environmental change in Grand Canyon, Arizona / by Robert H. Webb, Theodore S. Melis, and Richard A. Valdez ; prepared in cooperation with Grand Canyon Monitoring and Research Center.
Connect to full text Available online
View online- Format:
- Book
- Government document
- Author/Creator:
- Webb, Robert H.
- Series:
- Water-resources investigations report ; 02-4080.
- Water-resources investigations report ; 02-4080
- Language:
- English
- Subjects (All):
- Grand Canyon (Ariz.)--Environmental conditions--History.
- Grand Canyon (Ariz.).
- Ecology.
- Arizona--Grand Canyon.
- Genre:
- History
- Physical Description:
- 1 online resource
- Place of Publication:
- Tucson, Ariz. : U.S. Geological Survey ; Denver, CO : U.S. Geological Survey, Information Services [distributor], 2002.
- Notes:
- Title from title screen (viewed Jan. 31, 2004).
- Includes bibliographical references.
- Other Format:
- Webb, Robert H. Observations of environmental change in Grand Canyon, Arizona
- OCLC:
- 54207203
The Penn Libraries is committed to describing library materials using current, accurate, and responsible language. If you discover outdated or inaccurate language, please fill out this feedback form to report it and suggest alternative language.