SCHONELL, Fred J. <br/><br/>
Backwardness in the basic subjects / 
by Fred J.Schonell 
 - 4 th ed. 
 - London  Oliver and Boyd  1952 
 - xix, 566 p. 
<br/><br/> Includes appendix, index. 
<br/><br/><label>ISBN: </label>112198 
<br/><br/><label>Dewey Class. No.: </label>371  / SCH