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  1. 1
    Philadelphia : P. Blakiston's Son, 1914.
    viii, 167 p. : ill. ; 19 cm.
    ...Text-books of chemical research and engineering....
  2. 2
    London, J. & A. Churchill, 1927.
    viii, 202 p. illus., diagrs. 19 cm.
    ...Text-books of chemical research and engineering....

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