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Gaya APA
Good Old Fashioned Challenging Puzzles and Perplexing Mathematical Problems (Puzzle Books). (2007).
:
.
Gaya Chicago
Good Old Fashioned Challenging Puzzles and Perplexing Mathematical Problems (Puzzle Books).
.
:
,
2007.
Text.
Gaya MLA
Good Old Fashioned Challenging Puzzles and Perplexing Mathematical Problems (Puzzle Books).
.
:
,
2007.
Text.
Gaya Turabian
Good Old Fashioned Challenging Puzzles and Perplexing Mathematical Problems (Puzzle Books).
:
,
2007.
Print.