. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. Galleries of the Spruce Bark-beetle. Showing Different Stages. a. h, .: Freshly i-xcaviin-cl ^ in living l,ârk; .1. .. 'rii-s in .1,â,| l,ârk. , From Hul â >» u. I»i\. Ill f. .x. l>fi>t. of .\Kriciiliurr. i ' '. 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. Was

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. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. Galleries of the Spruce Bark-beetle. Showing Different Stages. a. h, .: Freshly i-xcaviin-cl ^ in living l,ârk; .1. .. 'rii-s in .1,â,| l,ârk. , From Hul â >» u. I»i\. Ill f. .x. l>fi>t. of .\Kriciiliurr. i ' '. 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