51. Piston rings up to 200 mm diameter for reciprocating internal combustion engines. Designs, dimensions and designations for singlepiece rings. Rectangular compression rings. Specification for rectangular rings Part 7.1.1, (1st May 1992) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (24 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
52. Piston rings up to 200 mm diameter for reciprocating internal combustion engines. Specification for expander/segment oil control rings. (15th October 1992) 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) ↗
53. Piston rings up to 200 mm diameter for reciprocating internal combustion engines: specification for half keystone rings. (1st May 1992) 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) ↗
54. Piston rings up to 200 mm diameter for reciprocating internal combustion engines: specification for rectangular rings with narrow ring width. (1st May 1992) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (22 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
55. Platinum-nickel-chromium deposits : geology, exploration and reserve base /: geology, exploration and reserve base. (2016) Authors: Haldar, S. K Record Type: Book Extent: 1 online resource View Content: Available online (eLD content is only available in our Reading Rooms) ↗
56. Powder metallurgical materials and products. Methods of testing and chemical analysis of hardmetals. Chemical analysis by flameatomic absorption spectrometry. Determination of chromium in contents from 0.01% to 2% ($7Im/m$7R) Part 4.17.6, (30th June 1986) 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) ↗
57. Preservative textile treatments. Methods of test Part 2, (29th April 1983) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (23 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
58. Safety of toys. Migration of certain elements Part 3, (29th April 2021) 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) ↗
59. Sampling and analysis of copper and copper alloys. Method for determination of chromium in copper alloys: titrimetric method Part 10, (28th February 1989) 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) ↗
60. Sampling and analysis of copper and copper alloys. Method for determination of chromium in copper and copper alloys by flame atomic absorption spectrophotometry Part 4, (31st December 1986) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (6 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗