TY - CHAP A1 - Bengtson, V.L. A1 - Rosenthal, C. A1 - Burton, L. T1 - Families and aging: Diversity and heterogeneity Y1 - 1990 A3 - Binstock, R.H. A3 - George, L.K. T2 - The handbook of aging and the social sciences CY - New York PB - Academic Press SP - 263 EP - -287 ER -