Guide to preparation of microfilm and other microforms that may be required as evidence / 
British Standards Institution. 
 - 7 pages ;   33cm. 
 - British standard ;  BS 6498 : 1991 .
 - British standard ;  BS 6498 : 1991 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information storage and retrieval systems--Microforms.<br/>Microforms--Storage.