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  1. By: California Academy of Sciences. Department of Botany. - California Academy Of Sciences. Dept. of Botany.
    Publication info: San Francisco, CA Dept. of Botany, California Academy of Sciences [1987-1989]
    Holding Institution: California Academy of Sciences
  2. By: Howell, John Thomas, - California Academy of Sciences. Department of Botany.
    Holding Institution: California Academy of Sciences