676 | The effects of fishing at low water levels |
677 | 1967 - George and Gideon cutting mbati for the bedroom block. |
678 | 1967 - Quakers arriving on the shore of L.George. |
679 | First annual review of the Taw/Torridge estuary catchment management plan (1996)
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680 | Suffolk estuarine strategies : Blyth estuary strategy : introduction to the strategy |
681 | Method for the assessment of river water quality using benthic macroinvertebrates |
682 | Development of Operational and Policy Guidance on the Use of Hydrogen Peroxide |
683 | The National Groundwater and Contaminated Land Centre (NGWCLC) |
684 | The evaluation of a Philips ammonium ion selective electrode (220/14/T) |
685 | The greening of Grasmere: its plankton periodicity in 1988 |
686 | A strategic review of the petroleum refinery Industry Sector |
687 | Guidelines for river corridor surveys in the NRA : February 1992. draft 3 |
688 | Second annual review of the Sid/Otter catchment management plan 1999 |
689 | Contribution of small streams to potential fish production in the Conwy catchment |
690 | NRA strategy for reducing the concentration of pesticides in controlled waters |
691 | The ecology and management of riverine trees : interim report |
692 | Low-cost modifications of the Crump weir to improve fish passage |
693 | Policy and practice for the protection of groundwater - Thames region appendix |
694 | Policy and practice for the protection of floodplains |
695 | 'Sea Vigil' water quality monitoring : the Wash 1992-1993 |
696 | Second annual review of the Seaton, Looe and Fowey catchment management plan |
697 | The Yarrow catchment : recommendations for statutory water quality objectives |
698 | The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T) |
699 | The National Rivers Authority employee attitude survey : summary |
700 | The Use of a Hydroacoustic Counter for Assessing Salmon Stocks |