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The sinister signpost / by Franklin W. Dixon.

By: Series: The Hardy boys mystery stories ; 15Publication details: New York : Grosset, 1968,c1936.Description: 175 p. : ill. ; 20 cmISBN:
  • 0448089157
Subject(s): DDC classification:
  • Fic 20
Summary: The Hardy boys and their father solve a mystery involving inexplicable crashes of highspeed race cars being used to test an experimental turbine motor.
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The Hardy boys and their father solve a mystery involving inexplicable crashes of highspeed race cars being used to test an experimental turbine motor.

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