1. Projections of the population of the United States by age, sex, and race 1988-2080;Spencer,1985
2. Beyond the bedside: the social context of geriatric practice;Avorn,1982
3. Statistics. Current estimates from the National Health Interview Survey United States;Jack,1979
4. Disablement and chronic health problems in Ontario. Ontario Health Survey 1990;Bradley,1993
5. Prescribed medicines: use, expenditures, and source of payment;National Center For Health Services Research, National Health Care expenditures Study,1982