00617nam 2200157z- 450 9910712278603321(CKB)5470000002491333(EXLCZ)99547000000249133320230509c1989uuuu -u- -engTrends and variations in first births to older women, 1970-86Hyattsville, MdU.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Center for Health StatisticsBOOK9910712278603321Trends and variations in first births to older women, 1970-863322940UNINA