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Orton (Edward). See Ohio Geological Survey. 



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Ortus Sanitatis. fol. (Maguntice, 1491.) 



Osbeck (Pehr). Dagbok ofver en Ostindisk Eesa. 



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Another copy. 



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Osculati (Gaetano). Note d'uu Viaggio nella Persia e nelle Indie 

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O'Shanesy (Patrick Adam). Contributions to the Flora of Queens- 

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Osier (W.). An investigation into the Parasites in the Pork supply 

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Osnabrlick. 



Naturwissenschaftlicher Verein zu Osnabrtick. 



Jahresberichte, 1870-80. 8vo. OsnabriicJc, 1830, 



Osten-Sacken (Charles Robert). Catalogue of the described Diptera 

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Characters of the Larvae of Mycetophilidse. (Proc. Entom. 

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Note on some Diptera from the Island Guadeloupe, collected 



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List of the N. American Syrphidse. (Bull. Buff, Soc. Nat. Sci.) 



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Report upon the collection of Diptera made in portions of 

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Prodrome of a Monograph of: the Tabanidfo of the United States. 

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Western Diptera : Descriptions of nt-w genera and species of 

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Another copy. 



Bemerkungen liber Blepharoceriden. (Deutsch. Entom. 



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Diptera from the Philippine Islands. (Deutsch. Entom. 

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