Science Bob Pflugfelder

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Books by Science Bob Pflugfelder (50 max)

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Nick and Tesla's High-Voltage Danger Lab A Mystery with Electromagnets, Burglar Alarms, and Other Gadgets You Can Build Yourself

2013

Science Bob Pflugfelder, Steve Hockensmith

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Nick and Tesla and the Robot Army Rampage: A Mystery with Gadgets You Can Build Yourself

2014

Steve Hockensmith, Science Bob Pflugfelder, Bob Pfugfelder, MacLeod Andrews, Bob Pflugfelder