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  1. By: Humm, Harold J. (Harold Judson), - United States. War Production Board. Office of Production Research and Development.
    Publication info: Durham, N.C, Duke University Press, 1946
    Holding Institution: Multiple institutions
  1. By: Humm, Harold J. (Harold Judson),
    Type: Article
    In: Journal of the New York Botanical Garden
    Volume: 45
    Issue: 537
    Date: 1944-09
    Page Range: 193--199
    Publication Info: Lancaster, Pa Published for the Garden by the New Era Printing Co 1900-
  2. By: Humm, Harold J. (Harold Judson),
    Type: Article
    In: Journal of the New York Botanical Garden
    Volume: 49
    Issue: 578
    Date: 1948-02
    Page Range: 25--32
    Publication Info: Lancaster, Pa Published for the Garden by the New Era Printing Co 1900-