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Dyfyniad Arddull ChicagoGow, Alan J., Martha C. Whiteman, Alison Pattie, Lawrence Whalley, John Starr, and Ian J. Deary. Lifetime Intellectual Function and Satisfaction With Life in Old Age: Longitudinal Cohort Study. BMJ Publishing Group Ltd, 2005.
Dyfyniad MLAGow, Alan J., et al. Lifetime Intellectual Function and Satisfaction With Life in Old Age: Longitudinal Cohort Study. BMJ Publishing Group Ltd, 2005.
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