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This is an illustration of the pine-destroying beetle of the Black Hills; a, adult beetle, enlarged; b, adult beetle, natural size.


Yearbook of the United States Department of Agriculture (Washington: Government Printing Office, 1903) 276


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1960×2400, 1.5 MiB

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836×1024, 234.8 KiB

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522×640, 110.9 KiB

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261×320, 32.8 KiB