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'For the sake of persons of ... different types, scientific truth should be presented in different forms, and should be regarded as equally scientific, whether it appears in the robust form and the vivid coloring of a physical illustration, or in the tenuity and paleness of a symbolic expression.'

James Clerk Maxwell
(1831-1879)

Deal of the Day

Erector 10 Model Set
Regular Price: $39.99
Today's Price: $21.00
Great Erector starter set that allows you to build 10 cool models. Buy it now! Deal ends at midnight!

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