Carl Sagan

Audioraamatud, mida esitab Carl Sagan

A Rare Recording of Carl Sagan Testifying Before Congress On Climate ChangeCarl Sagan
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Astrophysicist Carl Sagan Discusses Life On Earth and Other PlanetsCarl Sagan
A Rare Recording of Astrophysicist Carl Sagan Discussing Planet EarthCarl Sagan
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Visions for the 21st Century: At the 50th Anniversary of The United NationsCarl Sagan
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