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This collection contains 91 volumes from 72 titles, containing 32625 pages.

  1. By: Arnold Arboretum. - Arnold Arboretum.
    Publication info: Jamaica Plain, Mass Arnold Arboretum, Harvard University
    Volume: v.50 (1990)
    Holding Institution: Harvard University Botany Libraries
    BHL Collections: Earth Optimism | Expanding Access to Biodiversity Literature
  2. By: American Ornithologists' Union.
    Publication info: Washington, D.C, American Ornithologists' Union, etc, 1884-
    Volume: v.26 (1909)
    Holding Institution: Smithsonian Libraries and Archives
    BHL Collections: Earth Optimism