261. Tracked Changes. Small craft. Electrical systems. Alternating and direct current installations. (8th December 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (106 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
262. Tracked Changes. Specification and qualification of welding procedures for metallic materials. Welding procedure test. Upset (resistance butt) and flash welding Part 13, (26th May 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (64 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
263. Tracked Changes. Superconductivity. Electronic characteristic measurements. Local critical current density and its distribution in large-area superconducting films Part 17, (7th March 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (116 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
264. Uninterruptible power systems (UPS). Safety requirements Part 1, (17th February 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (82 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
265. Uninterruptible power systems (UPS). Safety requirements Part 1, (25th November 2019) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (78 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗