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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. Soil-depleting, soil-conserving, and soil-building crops /
    By: Pieters, A. J.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,[1938]
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
    Subjects: AgSpace  conservation plants  Crops and soils  Grasses  Internet resource  Soil conservation  Soil degradation  Soil management  soil organic matter  soil quality  soil resource management  
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