dcsimg
Please read BHL's Acknowledgment of Harmful Content
Sort By:
  1. By: Merrill, J. H. - Ford, A. L. (Anson L.)
    Type: Article
    In: Journal of agricultural research
    Volume: 6
    Issue: 3
    Date: 1916-04-17
    Page Range: 115--127
    Publication Info: Washington, U.S. Govt. Printing Office, 1913-1949