1. Analogue signals for process control systems. Specification for direct voltage signals Part 2, (31st March 1980) 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) ↗
2. Methods for specifying and measuring the characteristics of sound system equipment. Loudspeakers. Noise signals for loudspeaker units and loudspeaker systems Part 11 Supplement 1, (31st December 1980) 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) ↗