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1883. 



Zittel, K. A., and Barrois, C. Traito de Paleontologie. Paris, 1883. 

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1885. 



Lankester, E. R. Article ""Polyzoa." In Encyclopeedia Britan- 

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1887. 



Vine, Gr. R. Notes on classifications of Cyclostomatous Polyzoa: 

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1891. 



Teplov, A. G. [The Bryozoa of the Zoological collection of the 

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1893. 



Wheatcroft, "W. Gr. Polyzoa. (Intern. Jour. Micro. Nat. Sci., 

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1895. 



Pergens, E. Note sur I'identification et la separation des especes 

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1896. 



Harmer, S. F. Polyzoa, in "The Cambridge Natural History." 

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1827. 



G-r&nt, R. E. Observations on the structure and nature of Flustrse. 

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