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Distance light travels in 3.3 femtoseconds Crossword Clue

6 letters · New York Times · Saturday, August 1, 2009 · 18-Across

Appeared in 1 New York Times Crossword: Saturday, August 1, 2009.

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Distance light travels in 3.3 femtoseconds Crossword Clue (6 Letters) | CrosswordAlly