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      Scientific American January 06, 1912

      Prevention of Importation of Insect-Infested of Diseased Plants

      • January 6, 1912

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      More in the January 06, 1912 issue of Scientific American
      • A Throttlinǵ Two-Cycle Motor
      • The Nitroǵen Cycle as it Affects Aǵriculture
      • Trade Notes and Formulæ
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