dcsimg
Please read BHL's Acknowledgment of Harmful Content
Sort By:
  1. By: Ehlers, John H.
    Type: Article
    In: American journal of botany
    Volume: 2
    Issue: 1
    Date: 1915-01
    Page Range: 32--70
    Publication Info: Lancaster, Pa, Published in cooperation with the Botanical Society of America by the Brooklyn Botanic Gardens, 1914-