Indian standard hollow steel sections for structural use :  specification / 

 - 2nd revision. 
 - New Delhi :  Bureau of Indian Standard,  c1997. 
 - 19 p. :  ill. ;  30 cm. 
 -  IS 4923 : 1997 .
<br/><br/><label>ISBN: </label>NA 
<br/><br/><label>LC Class. No.: </label>21267-21271 
<br/><br/><label>Dewey Class. No.: </label>624.1821  / IND