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 (???)  Library
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 (???) opular Science Monthly 
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 (DIR) Appletons' Popular Science Monthly, December 1898 Volume LIV, No. 2, 
       By Various; Youmans, William Jay, 1838-1901 [Editor]
 (DIR) The Scientific Monthly, October to December, 1915
       By Various; Cattell, James McKeen, 1860-1944 [Editor]