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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Forest Products Laboratory (U.S.) - Koehler, Arthur,
    Publication info: Washington, Govt. print. off, 1917
    Holding Institution: University of British Columbia Library
  2. By: Forest Products Laboratory (U.S.) - Koehler, Arthur,
    Publication info: Washington, U.S. Govt.Print.Off, 1917
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Koehler, Arthur,
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1922
    Holding Institution: Multiple institutions
  1. By: Koehler, Arthur,
    Type: Article
    In: Journal of the New York Botanical Garden
    Volume: 48
    Issue: 567
    Date: 1947-03
    Page Range: 67--70
    Publication Info: Lancaster, Pa, Published for the Garden by the New Era Printing Co, 1900-