Specification for high density polythene sheet for general purposes / 
British Standards Institution. 
 - 16 pages :  illustrations,   22cm. 
 - British standard ;  BS 4646 : 1970 .
 - British standard ;  BS 4646 : 1970 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Polyethylene--Great Britain.<br/>High-density polyethylene--Great Britain.