1. Code of practice on the use of semiconductor devices. General considerations Part 1, (14th November 1968) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (32 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Specification for apparatus for physical methods of gas analysis. Infra-red gas analysers for industrial use Part 1, (19th September 1968) 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) ↗