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  1. Crop yields from Illinois experiment fields in 1929 together with a general summary for the rotation periods ending in 1929 / by F.C. Bauer.
    By: Bauer, F. C.
    Publication info: Urbana, Ill. :University of Illinois Agricultural Experiment Station,1930.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Agricultural experiment stations  Crop yields  Illinois  Soil management  
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  2. Crop yields from Illinois soil experiment fields in 1928 / by F.C. Bauer.
    By: Bauer, F. C.
    Publication info: Urbana, Ill. :University of Illinois Agricultural Experiment Station,1929.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Agricultural experiment stations  Crop yields  Illinois  Soil management  
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  3. Improvements in crop growing
    By: Robertson, James W.
    Publication info: S.l. :s.n.,1899?
    Contributed by: Canadiana.org (archive.org)
    Subjects: Agriculture  Canada  Crop yields  
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