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insect situation in pine forests of oregon. Timberman 22 (1) : 35, 113, 116, 



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INSECT ENEMIES OF THE PINE IN THE BLACK HILLS FOREST RESERVE. U. S. Dept. 



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PRELIMINARY REPORT ON THE INSECT ENEMIES OF FOrESTS IN THE NORTHWEST . . . 



U. S. Dept. Agr., Div. Ent. Bull. 21, 27 pp. 1899. 



Hopping, Ralph. (9367) 



influence of slash on bark-beetle outbreaks. Forestry Chron. 4 (2) : 

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Hutchison, R. (9368) 



ON THE NATURAL HISTORY OF BEETLES AND OTHER INSECTS WHICH INFEST 



coniferae, and suggested remedies. Trans. Roy. Scot. Arbor Soc. 7: 

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THE BARK BEETLE PROBLEMS IN FORESTS OF NORTHWEST. Forest Patrolman 



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pine beetle infestations in government timber. Timberman 22 (10) : 37, 



illus. 1921. 



Miller, J. M. (9371) 



bark beetles and timber conservation. U. S. Dept. Agr. Yearbook, 1926: 

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Preston, J. F. (9372) 



bark beetles. Four L Bull. 6 (10) : 46, 1924. 



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THE FACTORS DETERMINING THE DISTRIBUTION OF NORTH AMERICAN BARK-BEETLES. 



Canad. Ent. 57 (11) 261-266. 1925. 



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pine bark beetles appear in Oregon. Amer. Lumberman 2360: 72, illus. 

 1920. 



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the tree-killing beetles of California. Amer. Lumberman 2181 : 32-33. 

 1917. 



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flathead borers on forest trees. Amer. Forestry 23 : 153. 1917. 



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insects and sap stain. Handle Trade v. 7, no. 21-22. 1913. 



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the pin-hole wood borers. South. Lumberman 427 : 4-5, illus. 1900. 



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wood and worms. Wood Craft 15 (6) : 193-194. 1911. 



Altson, A. M. (9380) 



beetles damaging seasoned timber. Timber Trades Jour. 91 : 925-926, 

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Armstrong, A. K. (9381) 



resistance of greenheart to marine borers. Engin. News-Rec 73 (5) : 181. 

 1916. 



