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  1. Cacti /
    By: Griffiths, David, - Thompson, Charles Henry,
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1929.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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  2. The grama grasses: Bouteloua and related genera,
    By: Griffiths, David, - United States National Museum.
    Publication info: Washington,Govt. print. off.,1912.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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