Here are the results for: Author carl sagan

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by Carl Sagan, Richard Turco, George W. Rathjens and Ronald H. Siegel, Starley L. Thompson and Stephen H. Schneider

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Comment from the Fall 1986 issue

by Paul R. Ehrlich, Carl Sagan, Donald Kennedy and Walter Orr Roberts

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Short Review from the Fall 1984 issue

by Carl Sagan

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Essay from the Winter 1983/84 issue

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