Data systems of the National Center for Health StatisticsMary Grace Kovar · First published 1989Open the Tome
Aging in the eighties, ability to perform work-related activities, data from the supplement on aging to the National Health Interview SurveyMary Grace Kovar · First published 1987Open the Tome
Expenditures for the medical care of elderly people living in the community throughout 1980Mary Grace Kovar · First published 1983Open the Tome
Differentials in expectation of additional children among mothers of legitimate live births, United States, 1964-1966Mary Grace Kovar · First published 1972Open the Tome
Employment during pregnancy; legitimate live births, United States, 1963Mary Grace Kovar · First published 1968Open the Tome
Variations in birth weight; legitimate live births, United States, 1963Mary Grace Kovar · First published 1968Open the Tome
Visits for medical and dental care during the year preceding childbirth, United States, 1963 birthsMary Grace Kovar · First published 1968Open the Tome
Charges for care in institutions for the aged and chronically ill, United States, May-June 1964Mary Grace Kovar · First published 1967Open the Tome
Peptic ulcers reported in interviews, United States, July 1957-June 1959Mary Grace Kovar · First published 1960Open the Tome
