BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 23 
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253. Cockerell, T. D. A. Dicerca a poplar feeder. <lnsect Life, 
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254. Cockerell, T. D. A. The natural food-plant of Graptodem 
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255. Cockerell, T. D. A. Injurious insects of Custer County, Colo. 
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257. Cockerell, T. D. A. List of. Coccidte observed in Jamaica. 
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258. Cockerell, T. D. A. The West Indian rufous scale. <Insect 
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259. Cockerell, T. D. A. Orthezia insignis as a garden pest. <In- 
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260. Cockerell, T. D. A. Notes on plant faume. <Insect Life, v. 5, 
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