| 901 | A survey of ferruginous minewater impacts in the Welsh coalfields |
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| 902 | A survey of ferruginous minewater impacts in the Welsh coalfields |
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| 903 | Temporal variability in chlorophyll-a : concentrations in the coastal environment : final report |
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| 904 | Narrowboats on the Thames : useful hints and tips |
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| 905 | Locks and weirs on the river Thames : how do they work? |
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| 906 | A guide to sustainable urban drainage : protecting the quality of our environment |
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| 907 | Air dispersion climate from the Castle Cement works at Ribblesdale |
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| 908 | A Review Of The Impact Of Microbiological Contaminants In Groundwater |
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| 909 | Environmental screening for the Merseyside objective 1 programme : environmental screening guidelines |
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| 910 | The NRA in business : annual review and summary accounts 1993-94 |
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| 911 | Environmental statement for the River Wandle flood alleviation scheme contract one (C1) |
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| 912 | Cyanobacteria (blue-green algae) in the south west region 1989 |
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| 913 | Toxic blue-green algae : a report by the National Rivers Authority |
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| 914 | Investigation of salinity in the river Thurne catchment of North East Norfolk |
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| 915 | Catchment abstraction management strategies (CAMS) and the Water Framework Directive (WFD) |
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| 916 | Managing water abstraction : the catchment abstraction management strategy process : April 2001 |
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| 917 | The River Alt/Crossens fish stock assessment 2001 |
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| 918 | An assessment of water quality in the River Yarty catchment |
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| 919 | Investigations of discharges into the River Lemon at Newton Abbot |
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| 920 | Report on monitoring of environmental quality in the Severn Estuary |
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| 921 | INP-integrated North Sea programme : workshop 14-15th May 1992, Rijkswaterstaat,The Hague |
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| 922 | Conservation and recreation : the Wye challenge : volume 2 : technical appendices |
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| 923 | Artificial recharge to groundwater in the Otter valley |
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| 924 | Investigating the Applicability of Passive Sampling Devices to Pesticide Monitoring |
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| 925 | Water quality in Anglian Region : the first five years |
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