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Comparison of the crane flies (Diptera: Tipulidae) of two woodlands in eastern Kansas, with a key to the adult crane flies of eastern Kansas
Vol 51, Page 407
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Sexual size differences in the genus Sceloporus
Vol 51, Page 441
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A comparative anatomical study of mandibular structure in bees
Vol 51, Page 463
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Ecology and exploitation of Ctenosaura similis
Vol 51, Page 483
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The classification of halictine bees: tribes and Old World nonparasitic genera with strong venation
Vol 51, Page 501
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A new genus of Cryptodiran turtles (Testudinoidea, Chelydridae) from the Upper Cretaceous Hell Creek Formation of Montana
Vol 51, Page 539
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Pollen manipulation and related activities and structures in bees of the family Apidae
Vol 51, Page 575
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Summer crane-flies of Lake Itasca vicinity, Minnesota
Vol 51, Page 603
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The proboscis of the long-tongued bees: a comparative study
Vol 51, Page 631