Dr. Alex Ruuska, Amanda Hilgers, Carolyn Harwood; presentation: Tracing the trail: Pictured Rocks. z

Dr. Alex Ruuska, Amanda Hilgers, Carolyn Harwood; presentation: Tracing the trail: Pictured Rocks. z
  • Guest Presenter
Monday, September 13, 2010
6:00 PM EDT
36 Minutes 31 Seconds
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