The terrible twosome :
California five-spined ips, western pine beetle.

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Related Names
California. Division of Forestry.
Language(s)
English
Published
Sacramento, Calif. : California Division of Forestry, [1961]
Subjects
Pine > Diseases and pests > California.
Western pine beetle > California.
Ips confusus > California.
Note
"November 1961"--P. [2] of cover.
Physical Description
15 p. : ill. ; 20 cm.
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