Distribution of bark beetle attacks on ponderosa pine trees in Montana /
Philip C. Johnson.

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Main Author
Johnson, Philip C. (Philip Cornwell), 1907-
Related Names
Intermountain Forest and Range Experiment Station (Ogden, Utah)
Language(s)
English
Published
Ogden, Utah : U.S. Dept. of Agriculture, Forest Service, Intermountain Forest & Range Experiment Station, 1967.
Subjects
Ponderosa pine > Diseases and pests > Montana.
Bark beetles.
Note
Caption title.
Physical Description
7 p. : ill. ; 27 cm.
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