Recommendations for processing and storage of silver-gelatin-type microfilm / 
British Standards Institution. 
 - 5 pages ;  30cm. 
 - British standard ;  BS 1153 : 1992 .
 - British standard ;  BS 1153 : 1992 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Micrographics--Standards.<br/>Preservation microfilming.<br/>Microfilms--Storage.