| occupations and, 40
|
| Fetus and testosterone, 1115
|
| degree of masculinity, both sexes, 1113
|
| effect on mother, 1415
|
| gender and, 11
|
| genetic or congenital abnormalities X, Y chromosomes, 3839
|
| homosexuality and androgens in utero , 121
|
| sex-ratio of children and level in mothers, 14
|
| twins, boy-girl, and, 13
|
| Fiedler, Leslie, 160
|
| Fielden, Julie, 9091, 129130
|
| Fighting
|
| contemporary, large tools and heavy equipment, 35
|
|