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The Hollow Earth: Sci-Fi Boxed Set

Arthur Conan Doyle with George MacDonald, Philip K. Dick, Agnes D. Kingston, Edward Bulwer-Lytton, C. J. Cutcliffe Hyne, Francis Stevens, Edgar Rice Burroughs, A. Merritt, H. Rider Haggard, Sir Francis Bacon, Jules Verne, Lewis Page Mercier