Indian standard steel tubes for structural purposes :  specification / 

 - 5th revision. 
 - New Delhi :  Bureau of Indian Standards,  c2014. 
 - 8 p. :  ill. ;  30 cm. 
 -  IS 1161 : 2014 .
<br/><br/><label>ISBN: </label>NA 
<br/><br/><label>LC Class. No.: </label>21287-21291 
<br/><br/><label>Dewey Class. No.: </label>624.1821  / IND