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  1. Flora of Guatemala : part II: grasses of Guatemala /
    By: Swallen, Jason Richard,
    Publication info: Chicago, Ill. :Chicago Natural History Museum,1955.
    Holding Institution: University Library, University of Illinois Urbana Champaign
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  2. Gramineae of Nevada /
    By: Swallen, Jason Richard, - University of Nevada.
    Publication info: Washington, D.C. :Division of Plant Exploration and Introduction, Bureau of Plant Industry, U.S. Dept. of Agriculture,1940.
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
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