Marks,Gary N <br/><br/>
Education, social background and cognitive ability :    the decline of the social / 
Gary N.Marks 
 - 292p. : 
<br/><br/> includes index 
<br/><br/><label>ISBN: </label>9781138923225 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational equalization.
<br/><br/><label>LC Class. No.: </label>LC191MAR2014