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The Meteorite Craters.
Ley, Willy,
Hardcover (David McKay Co, June 15, 1968)None
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The Discovery of the Elements
Willy Ley
Hardcover (Delacorte Press, March 15, 1968)None
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Engineers' Dreams
Willy Ley
Hardcover (Viking, March 15, 1961)Diagrams and maps by Willy Ley and Illustration by Isami Kashiwagi.
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Space Stations
Willy Ley
Hardcover (distributed by Simon and Schuster, March 15, 1958)None
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ENGINEER'S DREAMS
Willy Ley
Hardcover (Viking Press, March 15, 1959)None
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Engineers Dreams
willy ley
Hardcover (Phoenix House, March 15, 1955)None
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Man-Made Satellites
Willy Ley
Hardcover (Guild Press, March 15, 1957)None
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Fire
Willy Ley
Unknown Binding (N. Doubleday, March 15, 1963)None
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Space travel
Willy Ley
Unknown Binding (Guild Press, March 15, 1958)None
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Man-made satellites
Willy Ley
Unknown Binding (Guild Press, March 15, 1958)None
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SPACE PILOTS. Illustrations by John Polgreen.
Willy. Ley
Hardcover (Guild Press, Inc., Poughkeepsie, NY: (1957)., March 15, 1957)None
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Fire
Willy Ley
Paperback (Nelson Doubleday, Inc., March 15, 1963)None