. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. U. S. DEPARTMENT OF AGRICULTURE, BUREAU OF ENTOMOLOGY—BULLETIN No. 83, Part I. L. O. HOWARD. Entomologist and Chief of Bureau. PRACTICAL INFORMATION ON THE SCOLYTID BEETLES OF NORTH AMERICAN FORESTS. I: BARKBEETLES OF THE GENUS DENDROCTOOTS. A. D. HOPKINS, Ph. D., In Charge of Forest Insect Investigations. Issued October 11, WASHINGTON: GOVERNMENT PRINTING OFFICE. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration a
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. U. S. DEPARTMENT OF AGRICULTURE, BUREAU OF ENTOMOLOGY—BULLETIN No. 83, Part I. L. O. HOWARD. Entomologist and Chief of Bureau. PRACTICAL INFORMATION ON THE SCOLYTID BEETLES OF NORTH AMERICAN FORESTS. I: BARKBEETLES OF THE GENUS DENDROCTOOTS. A. D. HOPKINS, Ph. D., In Charge of Forest Insect Investigations. Issued October 11, WASHINGTON: GOVERNMENT PRINTING OFFICE. 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: ., bookcentury1900, bookdecade1900, booksubje, booksubjectentomology
