. Bulletin of the Department of Agriculture. Agriculture. Bui. 774, U. S, Dept. of Agriculture. Plate The Mealy Plum Aphis. Infested plum Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Department : Supt. of Docs. , Govt. Print. Off.

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear