Indian standard: Code of practice for the instalation of electric bells and call system / 
BIS. 
 - New Delhi :  Bureau of Indian Standards ,  1992. 
 - 15p;28cm 
<br/><br/>Includes bibliogrphies and index. 
<br/><br/><label>ISBN: </label>12345672 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Indian standard
<br/><br/><label>Dewey Class. No.: </label>658.5620954 BUR