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LEGO Chain Reactions (Klutz Science/STEM Activity Kit), 9" Length x 1.06" Width 9780545703307 | eBay
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Amazon.com: LEGO Chain Reactions (Klutz Science/STEM Activity Kit), 9" Length x 1.06" Width x 10" Height : Pat Murphy and the Scientists of Klutz Labs: Toys & Games
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