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  1. By: Weiss, F. E. (Frederick Ernest), - Imms, A. D. (Augustus Daniel), - Robinson, Wilfred, - University of Manchester.
    Publication info: Manchester, Eng, The University press, 1916
    Holding Institution: Library of Congress
  2. By: Robinson, Wilfred, - University of Alberta. Department of Field Crops.
    Publication info: Edmonton, Alberta, University of Alberta, [1928]
    Holding Institution: University of Alberta Library