Specification hot-rolled structural steel sections.  Part 2.  Hollow sections / 
British Standards Institution 
 - 13 leaves :  illustrations ;   21 cm. 
 - British standard ;  BS 4848 : Part 2 : 1975 .
 - British standard ;  BS 4848 : Part 2 : 1975 .
<br/><br/><label>ISBN: </label>0580090000