Specification for railway rails / 
British Standards Institution. 
 - 34 pages :  illustrations ;  33cm. 
 - British standard ;  BS 11 : 1978 .
 - British standard ;  BS 11 : 1978 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Railroads--Specifications. <br/>Railroad tracks. <br/>Railroad rails.