Matching Items (2)
- All Subjects: Tourism
- All Subjects: Grand Canyon (Ariz.)
- Creators: American Journal of Science
- Creators: Evans, R. T.
ContributorsMatthes, F. (Author) / Evans, R. T. (Author) / The Military engineer (Publisher)
Geological Survey of the Grand Canyon in published journal. Vol. XVIII, No. 99.
ContributorsMaxon, John H. (Author) / Campbell, Ian (Author) / American Journal of Science (Publisher)
Excerpt on the Archean Ripple Mark in the Grand Canyon.