101 | Chemical river quality 1993-1995 according to the general quality assessment (GQA) scheme [map] : scale 1 : 750 000 |
102 | Chironomids as indicators of biological quality : present use and future potential : a report of a workshop held at the Environment Agency, Thames Region |
103 | Graphical representation of certain metals and organics concentrations in relation to flow rates and sampling times for some of the rivers in District 6 |
104 | An audit of performance in the AQC inspection of standard biological macro-invertebrate samples in 2001 : Environment Agency CEH Report Ref: COO 15 8/24 |
105 | An audit of performance in the primary analysis of standard biological macro-invertebrate samples in 2001 : Environment Agency CEH Report Ref: COO 158/23 |
106 | Environmental radioactivity around steel works : an evaluation of the significance of lead-210 and polonium-210 in environmental samples collected in 1996/97 from around steel works Operated by British Steel at Redcar, Scunthorpe, Llanwern and Port Talbot |