An Introduction to Karst and the Karst Aquifers of Bexar County (AT Program)
1:12:03
Texas Bumblebees: History and Conservation (AT Program)
9:10
How to Rescue a Sinking Water Table
40:39
Geology and Cave Development in the Guadalupe Mountains with Paul Burger
1:21:23
Cretaceous Texas with Dr. Daniel Wegert
11:53
A Ciência por Trás das Cavernas: Como Elas Surgem e Crescem?
4:30
Karst
14:27
Groundwater & Karst
5:02