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  1. Report.
    By: Rothamsted Experimental Station, Harpenden, Eng. - Lawes Agricultural Trust Committee - Rothamstead Experimental Station, Harpenden, Eng.
    Publication info: Harpenden [etc.]Lawes Agricultural Trust [etc.]
    Contributed by: Gerstein - University of Toronto (archive.org)
    View Book
  2. Report.
    By: Rothamsted Experimental Station, Harpenden, Eng. - Lawes Agricultural Trust Committee - Rothamstead Experimental Station, Harpenden, Eng.
    Publication info: Harpenden [etc.]Lawes Agricultural Trust [etc.]
    Contributed by: Gerstein - University of Toronto (archive.org)
    View Book