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"Tau is the new Pi" T-Shirt
Sale Price $36.55. Original Price $43.00.
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Tau is the new Pi
Sale Price $5.99. Original Price $6.65.
Tau is the new Pi Coffee Mug
Price$28.45
Tau is the new Pi Tie
Price$55.80
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Euler's Identity T-Shirt
Sale Price $38.25. Original Price $45.00.
T-Rex Detector Mug
Price$28.45