You requested books by authors starting with "Devas, Charles S.", and with titles starting with "key to the world's progress; being an essay on historical logic". (Exclude extended shelves)
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Devas, Charles S. (Charles Stanton), 1848-1906: The key to the world's progress; being an essay on historical logic (Longmans, Green, and co., 1906) (page images at HathiTrust) Devas, Charles S. (Charles Stanton), 1848-1906: The key to the world's progress; being an essay on historical logic (Longmans, Green, and Co., 1912) (page images at HathiTrust)2 items were found.
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