1. Graphical symbols for electrical power, telecommunications and electronics diagrams. Telecommunications: transmission Part 10, (31st January 1989) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (37 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Graphical symbols for diagrams. Telecommunications. Transmission Part 10, (15th December 1996) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (66 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗