The Door Into Summer

Have Space Suit—Will Travel

Robert A. Heinlein

1958

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Friday

Robert A. Heinlein

1982

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The Stainless Steel Rat

Harry Harrison

1961

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Time Enough for Love

Robert A. Heinlein

1973

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Nightfall

Isaac Asimov

1970

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The Ringworld Engineers

Larry Niven

1979

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