Project Reports, Progress of Barberry Eradication, 1923 ; Rust Investigations (Dr. H.B. Humphrey, Pathologist in Charge) ; Barberry Eradication (Dr. F.E. Kempton, Pathologist in Charge).
doi 10.5962/bhl.title.121807
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Date
January 1, 1924
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[U.S. Dept. of Agriculture, Bureau of Plant Industry, Office of Cereal Crops and Diseases],