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9780613721219
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5, 4, 3, 2, 1... Mr. Flask and the kids at Einstein Elementary are about to blast off into a super-cool study of space science. Meanwhile, one of Mr. Flask's lab assistants thinks he's solved a big mystery here on Earth: Is Professor von Offel actually aBurkett, Kathy is the author of 'Out of This World! : Ethan Flask and Professor Von Offel Take on Space Science', published 2003 under ISBN 9780613721219 and ISBN 0613721217.
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