1. Specification for cold emulsion spraying machines for roads. Metric units Part 2, (25th January 1972) 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 electrical apparatus for explosive atmospheres. Type of protection N Part 3, (16th August 1972) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (14 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗