Ball, W. J. <br/><br/>
Thinking it out /  
W. J. Ball. 
 - London :    Longmans, Green & Co.,    1966. 
 - iv, 75 p. :    ill. ;    25 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Education -- Great Britain.<br/> Examinations -- Great Britain.
<br/><br/><label>Dewey Class. No.: </label>371.262 BAL