1. Hearing aids. Characteristics of electrical input circuits for hearing aids Part 6, (31st October 1985) 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) ↗
2. Specification for small-screen monochrome television receivers for use in schools. (31st August 1978) 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) ↗
3. Specification for school television receivers and stands. (29th October 1976) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (26 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
4. Sound system equipment. Specification for matching values for the interconnection of sound system components Part 15, (30th June 1988) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (21 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
5. Hearing aids. Characteristics of electrical input circuits for hearing aids Part 6, (15th November 1999) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (10 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
6. Specification for underground loudspeaker communication systems in coal mines. (29th April 1983) 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) ↗