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David Stahle @UCRngY5_y4PuetF9W37bkQRQ@youtube.com

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05:54
Tree-Ring Research in the Amazon Rainforest (Spanish verison)
05:54
Tree-ring research in the Amazon Rainforest (Portugese version)
05:56
Tree-Ring Research in the Amazon Rainforest
06:21
Ancient Bald Cypress of Black River, North Carolina