Specification for the dimensions of film in rolls for phototypesetting and photolettering equipment / 
British Standards Institution 
 - 5 leaves :  illustrations ;   31 cm. 
 - British standard ;  BS 5174 : 1975 .
 - British standard ;  BS 5174 : 1975 .
<br/><br/><label>ISBN: </label>0580088227 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Photocomposition.<br/>Photolettering.<br/>Perforations.