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)
[Washington, D.C.], [U.S. Dept. of Agriculture, Bureau of Plant Industry, Office of Cereal Crops and Diseases], [1924?]
1924
U.S. Department of Agriculture, National Agricultural Library
U.S. Department of Agriculture, National Agricultural Library
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