Books by Sydney T. Klein:
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Klein, Sydney T.: From the Watch Tower: or, Spiritual Discernment (New York: E. P. Dutton and Co., 1918)- Klein, Sydney T.: Science and the Infinite: or, Through a Window in the Blank Wall (second impression; London: W. Rider and Son, 1917) (Gutenberg text, illustrated HTML, and page images)
Additional books by Sydney T. Klein in the extended shelves:
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Klein, Sydney T.: From the watch tower; or, Spiritual discernment. (E.P. Dutton & Co., 1918) (page images at HathiTrust)- Klein, Sydney T.: Science and the infinite : or, Through a window in the blank wall (William Rider, 1912) (page images at HathiTrust)
- Klein, Sydney T.: Science and the infinite or Through a window in the blank wall (William Rider & Son, 1921) (page images at HathiTrust; US access only)
Find more by Sydney T. Klein at your library, or elsewhere.