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The cost of producing farm products : methods of investigation. cost of growing Minnesota field crops, 1902, 1903, 1904

The cost of producing farm products : methods of investigation. cost of growing Minnesota field crops, 1902, 1903, 1904
Paper図書
by Willet M. Hays and Edward C. ParkerGovernment Printing Office1906
Other Libraries in Japan
  • Author HeadingHays, Willet M. Parker, Edward C.

Education for country life

Education for country life
Paper図書
by Willet M. HaysG.P.O.1909
Other Libraries in Japan
  • Author HeadingHays, Willet M. (Willet Martin)

Farm management : organization of research and teaching

Farm management : organization of research and teaching
Digital図書
by W.M. Hays, Andrew Boss, A.D. Wilson, and Thomas P. CooperGovt. Print. Off.1912
Other Libraries in Japan
  • Author HeadingHays, Willet M. (Willet Martin) Boss, Andrew ...

「農産物生産費」調査方法(訳)

「農産物生産費」調査方法(訳)
Paper図書
W.M.ヘイズ農林省農事試験場農業経営部n.d.
Other Libraries in Japan
  • Author HeadingHays, Willet M. Parker, Edward C.

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