51. Ophthalmic optics. Uncut finished spectacle lenses. Specifications for single-vision and multifocal lenses Part 1, (15th August 1996) 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) ↗
52. Non-alloy steel rod for drawing and/or cold rolling. General purpose rod, rimmed and rimmed substitute low carbon steel rod, rod for special applications. Requirements and tests. (15th March 1999) 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) ↗
53. Specification for approval testing of welding procedures. TIG or MIG welding of aluminium and its alloys Part 2, (26th February 1982) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (20 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
54. A guide to quality assurance. (15th November 1972) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (25 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
55. Code of practice for painting of buildings. (31st May 1982) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (83 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
56. Specification for approval testing of welders working to approved welding procedures. TIG or MIG welding of aluminium and its alloys Part 2, (26th February 1982) 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) ↗
57. Specification for approval testing of welders working to approved welding procedures. Fusion welding of steel Part 1, (1st June 1987) 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) ↗
58. Silica refractories. Specification for refractories for use in coke ovens Part 1, (31st May 1982) 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) ↗
59. Specification for metal-clad base materials for printed circuits. Flexible copper-clad polyimide film: PI-F-Cu-10 Part 10, (30th November 1977) 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) ↗
60. Specification for periodic inspection, testing and maintenance of transportable gas containers (excluding dissolved acetylenecontainers). Seamless steel containers Part 1, (30th September 1977) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (4 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗