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  1. Cost of producing hogs in Iowa and Illinois, years 1921-1922 /
    By: Steanson, Oscar, - Wilcox, R. H.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1926.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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  2. Factors in the cost of producing beef in the Flint Hills section of Kansas /
    By: Wilcox, R. H.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1926.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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  3. Field crop costs and returns, 1948-1954 : a study of costs and returns in four major-type-of-farming areas of Illinois / by R.H. Wilcox and R.A. Hinton.
    By: Wilcox, R. H. - Hinton, Royce A.
    Publication info: Urbana, Ill. :University of Illinois Agricultural Experiment Station,1957.
    Contributed by: University Library, University of Illinois Urbana Champaign
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