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BowEN, N. L. The identification of "stones" in glass. (Papers on Optical Glass, No. 4.) 



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 BoTER, S. See Richards, T. W. 

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 Case, E. C. Permo-carboniferous time vs. Permo-carboniferous conditions. Jour. Geol., vol. 



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Clements, Edith S. Flowers of mountain and plain. 2d ed. (1919). 



Clements, Frederic E. Scope and significance of paleo-ecology. Bull. Geol. Soc, 371 (1918). 



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Coble, Arthur B. Theta modular group determined by point sets. Amer. Jour. Math., vol. 

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Cull, S. T. Wallis. Spina bifida with associated disturbances in a human embryo 17 mm. long. 

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. Brief studies in heredity (unsigned) in Eugenical News as follows: Vol. Ill, Thomas 



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