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  1. By: Hawkins, Lon Adrian,
    Publication info: Baltimore,1913.
    Holding Institution: University of California Libraries (archive.org)
    Subjects: Fungicides  Plants, Effect of chemicals on  
  2. By: Hawkins, Lon Adrian,
    Publication info: Baltimore,1913.
    Holding Institution: The Johns Hopkins University Sheridan Libraries (archive.org)
    Subjects: Fungicides  Plants, Effect of chemicals on  
  3. By: Curtis, Otis Freeman,
    Publication info: Ithaca,1918
    Holding Institution: Cornell University Library
    Subjects: Plants, Effect of chemicals on  Roots (Botany)