Ranganathan, S.R.. <br/><br/>
The Five Laws of Library Science /  

 - Second Ed. 1988 /  
 - Bangalore-78 :   Sarada Ranganathan Endowment for Library Science ,   1988 
 - p.449 :  
<br/><br/><label>Dewey Class. No.: </label>2  / M8;2