Carl Sagan on the Anasazi peoples' calendrical devices

Name: Carl Sagan on the Anasazi peoples' calendrical devices
Uploaded: 2008-02-16T23:09:04+00:00
Channel: XXXSDESDEXXX
Description: Carl Sagan on the Anasazi calendrical devices

28.5K views · 18 years ago · 5:11

XXXSDESDEXXX

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Feb 16, 2008 · 28.5K views

Carl Sagan on the Anasazi calendrical devices