241. Tracked Changes. Tissue paper and tissue products. Determination of optical properties. Measurement of brightness and colour with D65/10° (outdoor daylight) Part 7, (28th September 2021) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (48 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
242. Traffic control equipment. Signal heads. (31st January 2000) 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) ↗
243. Transmitting equipment for radiocommunication. Frequency response of optical-to-electric conversion device in high-frequency radio over fibre systems. Measurement method. (31st October 2016) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (30 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗