Some stem tumors or knots on apple and quince trees
Circular (United States. Bureau of Plant Industry) ; no. 3.
Hedgcock, George G. (George Grant), 1863-1946
United States. Bureau of Plant Industry.
Washington, D.C. :U.S. Dept. of Agriculture, Bureau of Plant Industry,1908.
"Issued May 11, 1908."
Diseases and pests
NAL: 1 P69C no. 3 1908
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