Flesch, Rudolf <br/><br/>
The art of clear thinking / 
Rudolf Flesch 
 - New York  Barnes & Noble Books  1951 
 - 212p.  ill.  24cm 
<br/><br/><label>ISBN: </label>0064633691 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Thought and thinking