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Essig, E. O. Aphididae of southern 
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Essig, E. O. The genus Pseudo- 
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Essig, E. O. Combating the Citrus 
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Essig, E. O’. Aphididae of southern 
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Essig, E. O. The natural enemies 
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Essig, E. O. The genus Pseudo- 
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Essig, E. O. Notes on California 
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Essig, E. O. The natural enemies 
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[Coleoptera.] 857 
Essig, E. O. Some variations in the 
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[Aphidae.] 858 
Essig, E. O. The citrus mealy bug. 
( Pseudococcus citri) Risso. Pomona 
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Essig, E. O. A new mealy bug 
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Pseudococcus balceri n. sp. Pomona 
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(339-345). [Coccidae.] • 861 
Essig, E. O. and Baker, C. F. Host 
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862 
Eusclier, Hermann. Das Chitin- 
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Evans, W. H. A list of the butter- 
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a note on migration by Mr. J. Ever- 
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1910 (380-391). [Lepidoptera.] 864 
Evans, W. H. Additions and 
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[Evdokimov, M. I.] Eb ( h > okhmob , i>, M- 
H. Hacjrhji,CTBeirHOCTb y nuejrL. 
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Evers, Johannes. Xnsekten als 
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Evershed, J. vide Evans, W. H. 
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editio secunda 1906 und die Coleo 7 
