21. Specification for filament lamps for road vehicles. (31st July 1975) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (55 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
22. Specification for headlamp optical aiming devices. (30th July 1976) 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) ↗
23. Specification for motor vehicle lighting and signalling equipment. Sealed beam headlamps Part 4a, (27th April 1966) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (18 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
24. Tracked Changes. Electrically powered wheelchairs, scooters and their chargers. Requirements and test methods. (28th September 2022) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (174 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗