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2nd and later printings. By George Beard and Harold Hutchins. From the creators of Captain Underpants comes a tale of two wacky caveboys who travel to the future to save the world's natural resources. Hardcover, 5-in. x 7-in., 176 pages, B&W. NOTE: "Destined to fly off the shelves."—SLJ
Cover price $9.99.