Birth counts statistics of pregnancy and childbirth /
Macfarlane, Alison.
Mugford, Miranda.
National Perinatal Epidemiology Unit.
Great Britain.Office of Population Censuses and Surveys.
London H.M.S.O.
1984
Produced by the National Perinatal Epidemiology Unit in collaboration with Office of Population Censuses and Surveys
Includes index
Childbirth