1. Code of practice for audio-frequency induction-loop systems (AFILS). (15th August 1993) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (98 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Electroacoustics. Audio-frequency induction loop systems for assisted hearing. Methods of measuring and specifying the performance of system components Part 1, (13th July 2018) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (38 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
3. Electroacoustics. Hearing aids. Induction-loop systems for hearing aid purposes. System performance requirements Part 4, (30th April 2018) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (58 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
4. Hearing aids. Magnetic field strength in audio-frequency induction loops for hearing aid purposes Part 4, (15th November 1998) 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) ↗