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$17.99 Original price was: $17.99.$4.50Current price is: $4.50.
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$20.89 Original price was: $20.89.$5.22Current price is: $5.22.
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$52.99 Original price was: $52.99.$24.99Current price is: $24.99.
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-75%
$17.99 Original price was: $17.99.$4.50Current price is: $4.50.
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-86%
$179.00 Original price was: $179.00.$24.99Current price is: $24.99.
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-93%
$380.00 Original price was: $380.00.$24.99Current price is: $24.99.
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-53%
$53.00 Original price was: $53.00.$24.99Current price is: $24.99.
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-70%
$42.25 Original price was: $42.25.$12.67Current price is: $12.67.
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$19.99 Original price was: $19.99.$5.00Current price is: $5.00.
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$29.95 Original price was: $29.95.$8.98Current price is: $8.98.
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$43.20 Original price was: $43.20.$12.96Current price is: $12.96.
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$19.95 Original price was: $19.95.$4.99Current price is: $4.99.
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$55.99 Original price was: $55.99.$24.99Current price is: $24.99.
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$14.99 Original price was: $14.99.$3.75Current price is: $3.75.
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$85.50 Original price was: $85.50.$24.99Current price is: $24.99.
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$210.00 Original price was: $210.00.$24.99Current price is: $24.99.
![[Pi – Sigma] 1st Edition](https://covers.vitalsource.com/vbid/9783110193800.jpg "[Pi – Sigma] 1st Edition")
