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Sturdy puzzle box measures 9-1/4'' square x 2
The most well-known of these beasts was the American mastodon
bustling domain of insects
And 500-piece puzzles don't take up as much space on your table
Rosalind Franklin DNA Pin Athletics Sturdy puzzle box measures 9-1/4''Rosalind Franklin is known for taking the crucial photo of DNA that led to the discovery of its structure. But she contributed far more than a photo: Her research provided many of the clues needed to build the first accurate model of DNA, and she made important discoveries about the structure of RNA and viruses. This pin celebrates Franklin's contributions and is part of our Women in Science Collection. This pin comes with a fold out card with
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