1. Specification for copper and copper-cadmium tapes and binders for telegraph and telephone purposes. (25th June 1970) 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) ↗
2. Specification for copper jointing sleeves for telegraph and telephone purposes. (25th June 1970) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
3. Specification for copper-cadmium jointing sleeves for telegraph and telephone purposes. (25th June 1970) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (8 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
4. Specification for galvanized line-wire for telephone and telegraph purposes. (30th March 1972) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗