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  1. By: Zwanziger, Gustav Adolf,
    Holding Institution: Missouri Botanical Garden, Peter H. Raven Library
    BHL Collections: Engelmann Papers, Missouri Botanical Garden
  1. By: Zwanziger, Gustav Adolf,
    Type: Correspondence
    In: Asa Gray correspondence
    Date: 1871-03-01
    Publication Info: [1840-1891]