Doctor Proctor's fart powder. Time-travel bath bomb
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More about the book
Doctor Proctor has already invented Fart Powder, but he hasn't stopped there. Next up: a Time-travel Bath Bomb. Throw the Bath Bomb in the tub, lather up and imagine where you'd like to visit. The battle of Waterloo? No problem. The French Revolution? Let's go!
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Publication
2012
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The book is currently out of stock.