1. Harmonized system of quality assessment for electronic components: sectional specification: fixed capacitors with metallized electrodes and polypropylene dielectric. (31st December 1981) 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) ↗
2. Specification for polypropylene film twines. (31st August 1981) 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) ↗