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  1. The chemical composition of soil colloids /
    By: Robinson, W. O. - Holmes, R. S.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1924.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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  2. The inorganic composition of some important American soils /
    By: Robinson, W. O.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1914.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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  3. Manganese as a fertilizer. By M.X. Sullivan and W.O. Robinson ...
    By: Sullivan, Michael Xavier. - Robinson, W. O.
    Publication info: [Washington,Govt. print. off.]1913.
    Contributed by: University of California Libraries (archive.org)
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  4. The relation of some of the rarer elements in soils and plants /
    By: Robinson, W. O. - Miller, Carl Frederick, - Steinkoenig, L. A.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1917.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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  5. Variation in the chemical composition of soils /
    By: Robinson, W. O. - Fry, William H. - Steinkoenig, L. A.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1917.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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