Margetts, B. M., & Nelson, M. (1991). Design concepts in nutritional epidemiology. Oxford University Press.
Tohutoru Kātū ChicagoMargetts, Barrie M., me Michael Nelson. Design Concepts in Nutritional Epidemiology. Oxford, Eng.: Oxford University Press, 1991.
Tohutoro MLAMargetts, Barrie M., me Michael Nelson. Design Concepts in Nutritional Epidemiology. Oxford University Press, 1991.
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