PT  - JOURNAL ARTICLE
AU  - W H James
TI  - The decline in sex ratios at birth, England and Wales, 1973-90.
AID  - 10.1136/jech.50.6.690
DP  - 1996 Dec 01
TA  - Journal of Epidemiology and Community Health
PG  - 690--691
VI  - 50
IP  - 6
4099  - http://jech.bmj.com/content/50/6/690.short
4100  - http://jech.bmj.com/content/50/6/690.full
SO  - J Epidemiol Community Health1996 Dec 01; 50