Microfiche.  Part 1.  Specification for formats of 60 and 98 frames / 
British Standards Institution. 
 - 8 leaves :  illustrations ;  33 cm. 
 - British standard ;  BS 4187 : Part 1 : 1981 .
 - British standard ;  BS 4187 : Part 1 : 1981 .
<br/><br/><label>ISBN: </label>0580122751 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Microfilms--Standards.<br/>Microfiches--Standards.