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