1. Microfiche. Formats of 208, 270, 325 and 420 frames (except COM) Part 3, (29th December 1978) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Specification for computer output microfiche (COM), A6 size. (29th December 1978) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (26 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗