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  JSTOR Life Sciences Collection

  Authorized U-M users (+ guests in U-M Libraries).
  

  Available from 01/15/1915 volume: 1 issue: 1 until 12/15/1929 volume: 15 issue: 12. Available from 01/15/1930 volume: 16 issue: 1. Most recent 3 year(s) not available.
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  Proceedings of the National Academy of Sciences-

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  Available from 01/01/1915.
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  PubMed Central

  Available from 1915 volume: 1 issue: 1. Most recent 6 month(s) not available.