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:01*. Experimental Studies in Cytology. I. A Cytological Study of Arti- 

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:0i'. Experimental Studies in Cytology. II. Some Phenomena of Fertil- 

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'95. Maturation, Fertilization, and Polarity in the Echinoderm Egg. New 

 Light on the " Quadrille of the Centers." Jour. Morph., Vol. 10, No. 1, 

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