Who was J Harlen Bretz?
44:29
J Harlen Bretz - A Timeline
1:01:03
Landslides: Mapping, Assessment, Monitoring, Mitigating Hazards, and Funding
53:07
Ice Age Floods - A Common Thread for Agriculture
1:10:50
Supervolcanoes in the Pacific Northwest
1:04:35
Hells Canyon and the Ringold Formation
1:28:36
Age of Bretz's Spokane Flood? - Office Live
13:50
The Unbelievable Story of Earth’s Most Epic Flood
57:17