. Ciba Foundation colloquia on ageing. Old age; Aging; Animals -- growth & development. Fig. 9. Monozygotic twins at the ages of 25, 70, and Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ciba Foundation; Wolstenholme, G. E. W. (Gordon Ethelbert Ward). Boston, Little, Brown

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Keywords: ., bookcentury1900, bookpublish, booksubjectaging, booksubjectoldage