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  1. By: Westgate, J. M., - United States. Bureau of Plant Industry,
    Publication info: Washington, D.C, United States Department of Agriculture, Bureau of Plant Industry, Forage-Crop Investigations, May 23, 1913
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Westgate, J. M., - Coe, H. S. - United States. Bureau of Plant Industry,
    Publication info: Washington, D.C, United States Department of Agriculture, Bureau of Plant Industry, Forage-Crop Investigations, January 13, 1915
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library