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The future of BHL is uncertain, but hopeful. Learn more.
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  1. By: Castle, William E. (William Ernest), - Forbes, Alexander,
    Publication info: Washington, D.C, Carnegie Institution of Washington, 1906
    Holding Institution: University of California Libraries
  2. By: Castle, William E. (William Ernest), - Forbes, Alexander,
    Publication info: [Washington, D.C.], Carnegie Institution of Washington, 1906
    Holding Institution: University of Toronto - Gerstein Science Information Centre