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Subject "Rotation of crops"
The Morrow plots : a century of learning.
By: Odell, R. T. - University of Illinois at Urbana-Champaign.
Publication info: [Urbana, Ill.] :Agricultural Experiment Station, College of Agriculture, University of Illinois at Urbana-Champaign,
Contributed by: University of Illinois Urbana Champaign
Subjects: Agriculture Cropping systems Field experiments History Illinois Morrow Plots, University of Illinois, Urbana-Champ Research Rotation of crops Soil research