Osborne, R. Travis  1913- <br/><br/>
Twins, black and white / 
R. Travis Osborne. 
 - Athens, Ga. :  Foundation for Human Understanding,  c1980. 
 - xvii, 286 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0936396008 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Intelligence levels--African Americans<br/>Intelligence levels--United States.<br/>Twins--Psychology<br/>Mỹ<br/>Trí tuệ<br/>Tâm lý học<br/>Psychology.
<br/><br/><label>Dewey Class. No.: </label>155.7  / OSB 1980