Bibliography 



205 



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 Discussion of flies as carriers of disease. 



Howard, L. O. House-flies. U. S. Dept. of Agric, Bureau of 

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Hutchinson, Woods. The Story of the Fly That Does Not 

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Jackson, Daniel D. Conveyance of Disease by Flies Sum- 

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Leidy, Joseph. Flies as a Means of Communicating Contagious 

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Lord, F. T. Flies and Tuberculosis. Bost. Med. 6 s Surg. 

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 than that protected from them. 



