ESSENCK, H.J. <br/><br/>
Know Your Own I.Q.  Know Your Own I.Q., Harmondsworth : Penguin Books (H), 1981 
H.J. ESSENCK 
 - Harmondsworth  Penguin Books (H)  1981 
<br/><br/><label>Dewey Class. No.: </label>153.932