David Feldman has written at least 11 books. Their most popular book is Do Penguins Have Knees? with 2 saves with an average rating of -⭐.
Do Penguins Have Knees? Do Penguins Have Knees?
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Why Do Clocks Run Clockwise? and Other Imponderables Why Do Clocks Run Clockwise? and Other Imponderables: Mysteries of Everyday Life Explained
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How Do Astronauts Scratch an Itch How Do Astronauts Scratch an Itch: Imponderables' Books
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