CHROMOSOME NUMBER AND PAIRS IN AMBYSTOMA 
fj 
Della Valle, Paola 1909. L’organizzazione della cromatina studiata mediante 
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1912 La morfologia della cromatina dal punto di vista fisico. Archivio 
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1911 The sex chromosomes in Ascaris felis. Arch. f. Zellf., Bd. 7. 
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1919 Ibid. Part II. In press. 
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1916 A study of somatic chromosomes. I. Ibid., vol. 31. 
1918 A study of the somatic chromosomes. IL Ibid., vol. 35. 
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JOURNAL OF MORPHOLOGY, VOL. 33, NO. 1 
