Ancient chasm: Parts of Grand Canyon may be 17 million years old

✍ Scribed by Sid Perkins

• Book ID: 112199948
• Publisher: Society for Science & the Public
• Year: 2009
• Tongue: English
• Weight: 634 KB
• Volume: 173
• Category: Article
• ISSN: 0036-8423
• DOI: 10.1002/scin.2008.5591731003