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ON THE STUDY OF FOREST ENTOMOLOGY IN AMERICA; [WITH DISCUSSION]. U. S- 



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ON THE STUDY OF FOREST-TREE INSECTS, U. S. Dept. Agr., Div. Ellt. Bull. (n. S.) 



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THE RELATIONS OF INSECTS AND BIRDS TO PRESENT FOREST CONDITIONS. Gard. and 



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REPORT ON INVESTIGATIONS TO DETERMINE THE CAUSE OF UNHEALTHY CONDITIONS 

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56: [197] -461, illus. 1899. 



Hopping, Ralph. (9252) 



the entomological aspect of slash disposal. Soc. Amer. Foresters Proc 

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Howard, L. O. (9253) 



investigating forest insects. Amer. Forestry 18: 165-166. 1912. 



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FOREST INSECT PROBLEM OF THE PACIFIC SLOPE. JOUT. ECOII. Ellt. 14 I 447-450. 



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THE FOREST INSECT SITUATION OF THE DOUGLAS FIR REGION OF WESTERN WASH- 

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Judd, C. S. (9256) 



entomology as an aid to forestry. Jour. Forestry 21 : 788-793, 1923. 



Kline, A. C. (9257) 



entomology: past, present, and future. Empire [State] Forester 1917: 

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Knull, J. N. (9258) 



a few insect problems of a Pennsylvania forester. Forest Leaves 22 (8) : 

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SILVICULTURAL PRACTICE IN THE CONTROL OF FOREST INSECTS. 4th Intematl. 



Cong. Ent. Trans. 2: 332-341. 1928. 

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[PAPERS FROM THE DEPARTMENT OF FOREST ENTOMOLOGY.] N. Y. State Col. 



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FOREST ENTOMOLOGY AS A SUBJECT OF IMPORTANCE TO FORESTERS. Jour. 



Forestry 21 : 458-461. 1923. 



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the place of entomology in silviculture. Jour. Forestry 23: 372-375. 

 1925. 



St. George, R. A. (9264) 



insects as indicators of fire injury. U. S. Dept. Agr., Forest Worker 

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Sawyer, L. E. (9265) 



forest entomology. Ga. State Col. Agr. Forestry Club, Cypress Knee 5: 

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