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  1. British grasses and their employment in agriculture,
    By: Armstrong, Sydney Frederick.
    Publication info: Cambridge,University press,1917.
    Contributed by: Cornell University Library
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  2. British grasses and their employment in agriculture, by S. F. Armstrong.
    By: Armstrong, Sydney Frederick.
    Publication info: Cambridge,University press,1917.
    Contributed by: University of California Libraries (archive.org)
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