1. Methods for the measurement of air pollution. Deposit gauges Part 1, (16th December 1969) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (14 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
2. Methods for the measurement of air pollution. Directional dust gauges Part 5, (22nd June 1972) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (18 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗