Flesch, Rudolf. <br/><br/>
How to test readability / 
Rudolf Flesch. 
 - New York :   Harper & Brothers,  c 1951. 
 - 56 p. ;  20 cm. 
<br/><br/>Bibliography : p. 51-56. 
<br/><br/>322  322 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English grammar. 
<br/><br/><label>Dewey Class. No.: </label>808.042 / F631h