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The Development of Entomology in North America
Vol 13, Page 1, Date 1920
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The Muscular System of Gryllus Assimilis Fabr. (=Pennsylvanicus Burm.)
Vol 13, Page 16, Date 1920
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Ant guests from Fiji and the British Solomon Islands
Vol 13, Page 60, Date 1920
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The process of hatching in Corydalis [sic] cornuta Linn
Vol 13, Page 70, Date 1920
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Some Observations on the Genitalia of Lachnosterna
Vol 13, Page 75, Date 1920
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A Review of the Species of the Genus Gypona Occurring in North America North of Mexico (Homoptera)
Vol 13, Page 83, Date 1920
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The Winter of 1918-'19 and the Activities of Insects with Special Reference to the Clover Leaf-Weevil (Hypera punctata Fab.)
Vol 13, Page 101, Date 1920
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Some Observations on Insects of the between Tide Zone of the North Carolina Coast
Vol 13, Page 108, Date 1920
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A Note on the Mouthparts of the Aradidae
Vol 13, Page 121, Date 1920
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Minutes of the Annual Meeting
Vol 13, Page 123, Date 1920
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Entomology in the United States National Museum
Vol 13, Page 131, Date 1920
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Symposium on "the Life Cycle in Insects"
Vol 13, Page 133, Date 1920
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2. The Life Cycle of the Orthopteroid Orders
Vol 13, Page 137, Date 1920
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3. The Life Cycle in Hemiptera (Exc1. Aphids and Coccids.)
Vol 13, Page 142, Date 1920
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4. the Life Cycle of Aphids and Coccids
Vol 13, Page 156, Date 1920
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5. The Life Cycle of the Lepidoptera
Vol 13, Page 167, Date 1920
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6. The Life Cycle of the Coleoptera (Including the Strepsiptera)
Vol 13, Page 174, Date 1920
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7. The Life Cycle of the Diptera
Vol 13, Page 180, Date 1920
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9. The Life Cycle of Insects; General Discussion
Vol 13, Page 193, Date 1920
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The External Anatomy of Anthomyia Radicum Linn (Diptera, Anthomyidae)
Vol 13, Page 201, Date 1920
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The Digestive System of the Periodical Cicada, Tibicen Septendecim Linn
Vol 13, Page 223, Date 1920
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New or little-known crane-flies from Formosa (Tipulidae, Diptera)
Vol 13, Page 249, Date 1920
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The Myriapod Fauna of the Bermuda Islands, with notes on variation in Scutigera
Vol 13, Page 271, Date 1920
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Review of the Nearctic Tetanoceridae
Vol 13, Page 305, Date 1920
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An ecological study of hammock and piney woods insects in Florida
Vol 13, Page 325, Date 1920
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The Genus Trombicula Berlese, in America and the Orient
Vol 13, Page 381, Date 1920
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Some Studies on the Influence of Environmental Factors on the Hatching of the Eggs of Aphis Avenae Fabricius and Aphis Pomi DeGeer
Vol 13, Page 391, Date 1920
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A new subfamily of tanyderid flies (Diptera)
Vol 13, Page 402, Date 1921
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The correct name for the dipterous genus Dicrania
Vol 13, Page 408, Date 1920
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Index of Volume XIII
Vol 13, Page 409, Date 1920