Vernon, Philip E. <br/><br/>
Intelligence and cultural environment / 
Philip E. Vernon. 
 - London :  Methuen,  c1969. 
 - viii, 264 p. : ill. 
<br/><br/><label>ISBN: </label>0416121209 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children--Intelligence levels--Environmental aspects.<br/>Children--Intelligence levels--Social aspects.<br/>Intelligence tests--Environmental aspects.