$50 - $75
The fast spinning disk keeps on spinning faster and louder as time passes.
...
$74.00
"The best new science toy in a generation . . ." is a spinning top that levitates in mid air!
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$74.00
Very handy large Periodic Table Cards.
Create a 2.3 m periodic table with beautiful photos
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$69.00
"The World's most beautiful periodic table poster" is now double sided and in a
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$69.00
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