STUDIES ON TWINS: I. THE RELATION OF ORDER OF BIRTH AND AGE OF PARENTS TO THE FREQUENCY OF LIKE-SEXED AND UNLIKE-SEXED TWIN DELIVERIES
J. YERUSHALMY and S. E. SHEERARVolume:
12
Language:
english
Journal:
Human Biology
DOI:
10.2307/41447442
Date:
February, 1940
File:
PDF, 1.34 MB
english, 1940