共 9 条
[1]
Amir D., Volcani R., Effect of dietary ethylene dibromide on bull semen, Nature, 206, pp. 99-100, (1965)
[2]
Edwards K., Jackson H., Jones A.R., Studies with alkylating esters. II, A chemical interpretation through metabolic studies of the antifertility effects of ethylene dimethanesulphonate and ethylene dibromide, Biochem Pharmacol, 19, pp. 1781-1789, (1970)
[3]
National Center for Health Statistics, Fertility Tables for Birth Cohorts by Color: United Stales, 1917-1973, (1976)
[4]
Bailar J.C., Ederer E., Significance factors for the ratio of a poisson variable to its expectation, Biometrics, 22, pp. 639-643, (1964)
[5]
National Center for Health statistics, Birth and Fertility Ratio for Stales and Metropolitan Areas, (1977)
[6]
Fleiss J.L., Statistical Methods for Rates and Proportions, (1978)
[7]
National Center for Health Statistics, Statistics Needed for National Policies Related to Fertility, (1978)
[8]
National Center for Health Statistics, Trends in Fertility in the United States, Vital and Health Statistics, (1977)
[9]
National Center for Health Statistics, Contraceptive Utlization in the United States: 1973 and 1976, (1978)