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Doctor Proctor's Fart Powder is the debut children's book by Jo Nesbø, a renowned Norwegian crime writer. This humorous and adventurous story follows the misadventures of Nilly, a young boy who accidentally creates a powerful fart powder with the help of his eccentric neighbor, Doctor Proctor. The book's success launched Nesbø's career as a children's author and has since been translated into over 30 languages.