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  1. By: Rolfs, P. H. (Peter Henry),
    Publication info: Washington, G.P.O, 1904
    Holding Institution: Multiple institutions
  2. By: Rolfs, P. H. (Peter Henry), - Florida state horticultural society.
    Publication info: <Tallahassee, Fla, 1935>
    Holding Institution: University of Florida, George A. Smathers Libraries
  3. By: Rolfs, P. H. (Peter Henry),
    Publication info: New York, The Macmillan company, [1916]
    Holding Institution: University of California Libraries
  4. By: Rolfs, P. H. (Peter Henry),
    Publication info: New York, The Macmillan company, 1916
    Holding Institution: Library of Congress
  5. By: Rolfs, P. H. (Peter Henry),
    Publication info: New York, The Macmillan company, 1916
    Holding Institution: Cornell University Library
  6. By: Rolfs, P. H. (Peter Henry),
    Publication info: Richmond, Southern Planter Pub. Co, 1896
    Holding Institution: University of California Libraries
  1. By: Rolfs, P. H. (Peter Henry),
    Type: Article
    In: Botanical gazette
    Volume: 18
    Issue: 11
    Date: 1893
    Page Range: 417--419
    Publication Info: Hanover, Ind, [publisher not identified], 1876-1991
  2. By: Rolfs, P. H. (Peter Henry),
    Type: Article
    In: Botanical gazette
    Volume: 17
    Issue: 2
    Date: 1892
    Page Range: 33--39
    Publication Info: Hanover, Ind, [publisher not identified], 1876-1991