. Circular. Insect pests; Insect pests. . 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. Bureau of Entomology. [Washington, D. C. ] : The Division

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Keywords: ., bookauth, bookcentury1800, bookdecade1890, booksubjectinsectpests