Dewey ,Melvil <br/><br/>
Dewey decimal classification ED.21 vol.3 
Dewey ,Melvil 
 - 
 - New York  Online computer  1996 
<br/><br/>  
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Dewey Class. No.: </label>025.431 DDC.3-21;3