501. Harmonized system of quality assessment for electronic components. Generic specification: electromechanical switches. (31st March 1987) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (36 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
502. Specification for pure tone air conduction threshold audiometry for hearing conservation purposes. (31st January 1986) 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) ↗
503. Brazing. Specification for brazing Part 1, (28th February 1986) 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) ↗
504. Method for size-grading of muscovite mica blocks, thins and films. (31st January 1986) 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) ↗
505. Methods of testing refractory materials. Unshaped refractories used in monolithic construction. Introduction and definitions Part 7.0, (30th January 1987) 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) ↗
506. Open Systems Interconnection: connection-oriented presentation service definition. (31st July 1989) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (50 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
507. Open Systems Interconnection: file transfer, access and management. General introduction Part 1, (31st July 1989) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (50 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
508. Light gauge metal containers. Definitions and determination methods for dimensions and capacities. Open-top cans Part 1, (31st October 1988) 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) ↗
509. Medical electrical equipment. Particular requirements for safety. Specification for medical electron accelerators in the range 1 MeV to 50 MeV Part 2-2.1, (30th June 1989) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (36 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
510. Specification for gas burning appliances. Specification for gas burning instantaneous water heaters with automatic output variation (2nd and 3rd family gases) Part 5, (29th February 1988) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (32 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗