71. Water quality. Guidance on the estimation of fish abundance with mobile hydroacoustic methods. (30th April 2014) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (50 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
72. Water quality. Guidance standard for assessing the hydromorphological features of rivers. (15th September 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (54 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
73. Water quality. Sampling in deep water for macro-invertebrates. Guidance on the use of colonization, qualitative and quantitative samplers. (15th March 1995) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (20 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
74. Water quality. Sampling. Guidance on sampling of bottom sediments Part 6.12, (15th June 1996) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (36 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
75. Water quality. Sampling. Guidance on sampling of rivers and streams Part 6, (1st June 2020) Authors: British Standards Institution, Record Type: Book Extent: 1 online resource (36 pages) View Content: Available online (eLD content is only available in our Reading Rooms) ↗
76. Water quality. Sampling. Guidance on sampling of rivers and streams Part 6.6, (31st May 1991) 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) ↗