. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. Bui. 28, New Series, Div. of Entomology, U, S. Dept- of Agriculture Plate Spruce Bark showing Growth of Fungus, Polyporus volvatus. 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 : G. P. O.

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Keywords: ., bookcentury1800, booksubjectentomology, booksubjectinsects, booky