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The morphogenetic role of the yolk material in Amphibians, studied 



by means of heterospecific transplantations. Ilia. lc. J. 



REYER R. W. Regeneration problems. Invertebrates and Vertebrates. 



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REYNOLDS, S. R. M. Factors in fetal maturity. Homo, Macaca 

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Fetal vascular physiology. Homo, Lepus and Ovis. Illb. 15. M. 



Uterine contraction patterns in women. Illb. 17. M. 



RHODES, S. The lens induction in a number of amphibian species. 



Rana clamitans and R. catesbiana. Ilia. 10. J. 



(under direction of E. C. HORN) 

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Metamorphose bei Ephestia kuniella (Ptychopoda setiata) (Lepi- 



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RISLEY, P. L. Behavior of nucleic acids in development of telolecithal 



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Lower Vertebrates. Illb. 2c. c. LV. 



Histochemical studies of germ cells in relation to physiological 



alterations in the life cycle of the organism. Vertebrates. 



(in collaboration with A. L. SODERWALL) Nib. 17. c. V. 



RIZZOLI, C. Protein metabolism in chicken embryo. Gallus gallus. 



Illb. 2c. b. L. 

 ROBERTSON, F. W. Developmental study of lines selected for large 



and small body size in Drosophila melanogaster (Insecta). 



(in collaboration with E. C. R. REEVE) IHc. 2. D. 



ROBERTSON, G. G. The appearance and development of early 



ossification centers in the face of human embryos. I. 11. M. 



The production of hemopoietic and other anomalies in rat embryos 



by nitrogen mustards. Mus norvegicus. Ilia. 2. M. 



ROCK, J. A morphologic, descriptive study of human embryos, both 



normal and abnormal found in surgically removed uteri, in age 



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(in collaboration with A. T. HERTIG) 

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der Meiose bei Tubifex. Illb. 4. e. C. 



Physiologie des Knochenfischspermas. Illb. 4. L. 



ROOFE, P. G. Development of the central and peripheral nervous 



system in relation to behavior patterns along Coghillian lines of 

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(in collaboration with G. M. LEE) 



ROSE, S. M. (data not yet received). 



ROSENBAUM, R. M. Stage series studies and metamorphosis in 

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ROSIN, S. (data not yet received) 



ROSTAND, P. J. (data not yet received). 



ROTMANN, E. Regionale Induktion bei Amphibien. Triton. Illb. 7. J. 



Regeneration der Extremitat. Triton. IV. 4. J. 



