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  1. By: Keck, K. (Karl),
    Holding Institution: Missouri Botanical Garden, Peter H. Raven Library
    BHL Collections: Engelmann Papers, Missouri Botanical Garden
  2. By: Schultz, Friedrich Wilhelm, - Keck, K. (Karl), - Dörfler, Ignaz,
    Publication info: Weissenburg, F. Schultz, 1872-1915
    Holding Institution: Harvard University Botany Libraries
  1. By: Keck, K. (Karl),
    Type: Correspondence
    In: Asa Gray correspondence
    Date: 1879-04-16
    Publication Info: [1842-1891]