91. Acoustics. Determination of acoustic properties in impedance tubes. Two-microphone technique for normal sound absorption coefficient and normal surface impedance Part 2, (11th October 2023) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (40 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
92. Furniture. Assessment of the surface reflectance. (17th May 2023) 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) ↗