Comet
Carl Sagan
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Council of Fire
Eric Flint,
Walter H Hunt
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Heart of the Comet
Gregory Benford,
David Brin
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Comets: Speculation and...
Stephen F Pollard,
Nigel Calder
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Heart of the Comet
Gregory Benford
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Heart of the Comet
Gregory Benford,
David Brin
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Viewer GD Halley
Matthew Hart
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Halleys Komet
Tammann,
Veron
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Comet Lore: Halley's Comet In...
Edwin Emerson
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Exploration of Halley's Comet
Michael Grewing (Editor),
Francoise Praderie (Editor)
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The Return of Halley's Comet
Patrick Moore,
John Mason
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Asimov's Guide to Halley's...
Isaac Asimov
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The Science Digest Book of...
John Tullius
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Tales of the Comet:...
Douglas Campbell,
John Higgins
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Comet
Carl Sagan,
Ann Druyan
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The Comet Is Coming!: The...
Nigel Calder
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Halley's Comet!
Francis Reddy
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Comet Fever
Donald Gropman
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Comets: Swords of Heaven
David Ritchie
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Comets
Dr. Franklyn M Branley
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The Comet Book: A Guide for...
Robert D Chapman,
John C Brandt
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The Comet Handbook
Garry Stasiuk,
Dwight Gruber
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Halley Comet Find Pa
Ben Mayer
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Comets
Dr. Franklyn M Branley
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Ritchie David : Comets: the...
David Ritchie
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