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  1. 1

    Design concepts in nutritional epidemiology /

    Published 1991
    Book
  2. 2

    Design concepts in nutritional epidemiology / by Margetts, Barrie M.

    Published 1997
    Book
  3. 3

    Epidemiologic research : principles and quantitative methods / by Kleinbaum, David G.

    Published 1982
    Book