1. Antenatal identification of women at increased risk of being delivered of a low birthweight infant at term;Adelstein;Brit. J. Obstet. Gynaec.,1978
2. Statistical Methods in Medical Research;Armitage,1971
3. The tendency to repeat gestational age and birth-weight in successive pregnancies;Bakketeig,1977
4. Perinatal Problems;Butler,1969
5. Risk factors in human intra-uterine growth retardation;Butler,1974