[1]
Karlstrom, K. and Crossey, L. 2019. Classic Rock Tours 3. Grand Canyon Geology, One Hundred and Fifty Years after John Wesley Powell: A Geology Guide for Visiting the South Rim of Grand Canyon National Park. Geoscience Canada. 46, 4 (Dec. 2019), 163-193. DOI:https://doi.org/10.12789/geocanj.2019.46.153.