1. 1. Registrar General's Reports 1864-1952; Vital Statistics, Department of Health, 1953-1996. Government Publications Office, Dublin.
2. Demography of the human sex ratio in some Latin American countries 1967-1986;Feltosa;Hum Biol,1992
3. Declining sex ratios in Canada;Allan;Can Med Assoc J,,1997
4. Reduced ratio of male to female births in several industrial countries;Davis;JAMA,1998
5. Why is the sex ratio falling in England and Wales;Dickinson;J Epidemiol Commun Health,1996