1. The use of parity survivorship analysis in the study of reproductive out come;Dobbins;Am J Epidemiol,1978
2. Probabilities of fetal mortality;French;Public Health Rep,1962
3. Some questions concerning “A method for monitoring the fertility of workers;Harber;J Occup Med,1981
4. Thirty-four fertilized human ova, good, had and indifferent, recovered from 210 women of known fertility;Hertig;Pediatrics,1959
5. The incidence of spont ancous abortion;James;Popul Studies,1970