Devas, Charles Stanton <br/><br/>
The key to the world's progress: being an essay on historical logic 
by Charles Stanton Devas 
 - London  Longmans  1912 
 - 321p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Progress
<br/><br/><label>Dewey Class. No.: </label>B11 D491