Cognitive Surplus
Equations that Changed the World Card
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$6.99
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Tip your hat to some great mathematics and send your note in this Equations That Changed the World greeting card.
| Style | Blank Inside |
| Folded Dimensions | 4.5" x 6" | 11.5 cm x 15 cm |
| Material | 100% Recycled card |
| Envelope | 100% Recycled kraft paper envelope |