1. Punched cards. Unpunched paper cards Part 1, (23rd November 1970) 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) ↗
2. Specification for the use of high strength friction grip bolts in structural steelwork. Metric series. Higher grade (parallel shank) Part 2, (28th August 1970) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (16 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗