DDC 23 :  Dewy Decimal Classification 

 - 23rd ed. 
 - Gampaha,  Nine Publishing,  2019, 
 - 379p.  22cm 
<br/><br/><label>ISBN: </label>9789557688152 
<br/><br/><label>Subjects--Topical Terms: </label><br/>DDC
<br/><br/><label>Dewey Class. No.: </label>025.3.019  / DDC