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ROCKS SCIENCE ACTIVITY KIT
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ROCKS AND MINERALS TEST KIT MOHS HARDNESS SCALE SET
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MINERALS SCIENCE ACTIVITY KIT
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FLEXIBLE DANCING STONE ITACOLUMITE NATURAL
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COLLECTION OF 6 PLASTIC MATERIAL
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COLLECTION OF 9 GLASS
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COLLECTION OF FIBERS
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COLLECTION OF 12 WOODS
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COLLECTION OF 20 ALLOYS
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COLLECTION OF 20-24 METAL ALLOYS
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COLLECTION OF 10-12 METALS
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COLLECTION OF SOIL AND CLAY