31. Methods of measurement for equipment used in digital microwave radio transmission systems. Measurements on satellite earth stations. General Part 3-1, (1st April 1992) 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) ↗
32. Digital audio interface. General Part 1, (29th April 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (44 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
33. Tracked Changes. Digital audio interface. General Part 1, (3rd March 2023) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (92 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
34. Medical electrical equipment. X-ray tube assemblies for medical diagnosis. Focal spot dimensions and related characteristics. (9th February 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (50 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗