1. Guide to preparation of microfilm and other microforms that may be required as evidence. (30th April 1991) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (14 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Methods of measuring quality of output of graphic COM recorders. (28th February 1991) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (16 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
3. Micrographics. First generation silver-gelatin microforms of source documents. Density specifications. (29th November 1991) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (12 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
4. Micrographics. Microfilming of newspapers for archival purposes on 35 mm microfilm. (30th September 1991) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (16 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗