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The Perception of Ageism, Generativity, and the Attainment of Developmental Tasks of Elderly Widowers and Widows in Bogor, West Java, Indonesia. JFS [Internet]. 2016 Jul. 1 [cited 2025 Dec. 23];1(1):1-12. Available from: https://journal.ipb.ac.id/jfs/article/view/10259