Twins, black and white /

Osborne, R. Travis 1913-

Twins, black and white / R. Travis Osborne. - Athens, Ga. : Foundation for Human Understanding, c1980. - xvii, 286 p. : ill. ; 24 cm.

0936396008


Intelligence levels--African Americans
Intelligence levels--United States.
Twins--Psychology
Mỹ
Trí tuệ
Tâm lý học
Psychology.

155.7 / OSB 1980