Progress of barberry eradication, 1922 ; Rust investigations (Dr. H.B. Humphrey, Pathologist in charge) ; Barberry eradication (Dr. F.E. Kempton, Pathologist in charge)

Author: Humphrey, H. B. (Harry Baker), - Kempton, F. E. (Forrest Ellwood), - United States. Bureau of Plant Industry. Office of Cereal Crops and Diseases.
Publisher: Washington DC,US Dept of Agriculture, Bureau of Plant Industry, Office of Cereal Crops and Diseases 1923

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