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  1. The fruit of Opuntia fulgida; a study of perennation and proliferation in the fruits of certain Cactacece,
    By: Johnson, Duncan Starr,
    Publication info: Washington,Carnegie Institution of Washington,1918.
    Contributed by: Cornell University Library
    Subjects: Opuntia  Plant morphology  
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  2. The fruit of Opuntia fulgida; a study of perennation and proliferation in the fruits of certain Cactacece, by Duncan S. Johnson.
    By: Johnson, Duncan Starr,
    Publication info: Washington,Carnegie Institution of Washington,1918.
    Contributed by: NCSU Libraries (archive.org)
    Subjects: Botany  Morphology  Opuntia  
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