1. BS EN 13232-4. Railway applications. Track. Switches and crossings for Vignole rails. Part 4. Actuation, locking and detection (23rd January 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (25 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Rules for the preparation of detail specifications for semiconductor devices of assessed quality: microwave detector diodes. (5th February 1971) 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) ↗
3. Specification for semiconductor devices of assessed quality: generic data and methods of test. (31st July 1969) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (428 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗