Clue: Project Blue Book subject

We have 1 answer for the crossword clue Project Blue Book subject.

Possible Answers:

• UFO

Related Clues:

• Mystery craft
• Sci-fi sighting
• "Project __" (1978-79)
• Knocked for a loop
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• Subject of many a grainy picture
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• Craft in the tabloids
• ... and 51 more.

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