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by Singh, Kathleen Dowling
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by Challoner, Jack
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by Fenimore, Angie
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by Adolph, Jonathan
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Nick and Tesla's high-voltage danger laba mystery with electromagnets burglar alarms and other gadgets you can build yourselfBook
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The Apollo missions for kidsthe people and engineering behind the race to the moon with 21 activitiesBookby Pohlen, Jerome
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