The Stabilization of the price of wheat during the war and its effect upon the returns to the producer

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  -н: Gephart, William Franklin
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  Хэвлэсэн: (1928)
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  -н: Hibbard, Benjamin Horace
  Хэвлэсэн: (1919)
• Effect of sodium carbonate upon gasification of carbon and production of producer gas.
  -н: Fox, David A.
  Хэвлэсэн: (1931)
• Costs and returns in producing potatoes in New York in 1929.
  -н: Underwood, F.L
  Хэвлэсэн: (1933)