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  1. Effects of different systems and intensities of grazing upon the native vegetation at the Northern Great Plains Field Station /
    By: Sarvis, J. T. - North Dakota Agricultural College. - United States.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1923.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Agricultural systems  Forage plants  Grazing  Middle west  
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  2. Farm management : a handbook for farm pupils / by A.E. Bruce Fielding.
    By: Fielding, A. E. Bruce.
    Publication info: London :Vinton & Company,[1914?]
    Contributed by: University of California Libraries (archive.org)
    Subjects: Agricultural systems  Farm management  Great Britain  
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  3. Highest return farming systems for Drummer-Flanagan soils : an application of linear programming to farm planning / by Earl R. Swanson.
    By: Swanson, E. R.
    Publication info: Urbana, Ill. :University of Illinois, Agricultural Experiment Station,1958.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Agricultural systems  Agriculture  Economic aspects  Illinois  
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