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  1. Mineral composition of feathers from Canada geese (Branta canadensis) fed experimental diets / Robert L. Jones, Eugene L. Ziegler, Harold C. Hanson.
    By: Jones, Robert L. - Hanson, Harold C. - Ziegler, Eugene L. - Illinois.
    Publication info: Champaign, Ill. :Illinois Natural History Survey,1987.
    Contributed by: University of Illinois Urbana Champaign
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  2. Selected minerals in soils, plants and pheasants : an ecosystem approach to understanding pheasant distribution in Illinois / Robert L. Jones, Ronald F. Labisky, William L. Anderson.
    By: Jones, Robert L. - Anderson, William L. - Labisky, Ronald F.
    Publication info: Urbana,Ill. :Dept. of Registration and Education, Natural History Survey Division,1968.
    Contributed by: University of Illinois Urbana Champaign
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