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  1. By: Ehrlich, John
    Publication info: Jamaica Plain, Mass, The Arnold Arboretum of Harvard University, 1934
    Holding Institution: Harvard University Botany Libraries
  2. By: Ehrlich, John
    Publication info: Missoula, Mont, Northern Rocky Mountain Forest & Range Experiment Station, 1939
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  1. By: Ehrlich, John
    Type: Article
    In: Journal of the Arnold Arboretum
    Volume: 13
    Issue: 1
    Date: 1932
    Page Range: 75--80
    Publication Info: Cambridge, Mass Arnold Arboretum, Harvard University [etc.] 1919-