Dewey Melvil <br/><br/>
Dewey Decimal Classification and relative index 20. 4V. V1 - Tables. V2 - Schedule 000-599. V3 - Schedule 600-999. V4 - Index. Mannual 

 - 20th ed. 
 - New York  Forest Press  1989 
 - v. p. 
<br/><br/><label>Dewey Class. No.: </label>025.431 D515D(20)