526 | 1967 - Quakers arriving on the shore of L.George. |
527 | First annual review of the Taw/Torridge estuary catchment management plan (1996)
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528 | Suffolk estuarine strategies : Blyth estuary strategy : introduction to the strategy |
529 | Method for the assessment of river water quality using benthic macroinvertebrates |
530 | The evaluation of a Philips ammonium ion selective electrode (220/14/T) |
531 | The greening of Grasmere: its plankton periodicity in 1988 |
532 | A strategic review of the petroleum refinery Industry Sector |
533 | Guidelines for river corridor surveys in the NRA : February 1992. draft 3 |
534 | Second annual review of the Sid/Otter catchment management plan 1999 |
535 | Contribution of small streams to potential fish production in the Conwy catchment |
536 | Low-cost modifications of the Crump weir to improve fish passage |
537 | 'Sea Vigil' water quality monitoring : the Wash 1992-1993 |
538 | Second annual review of the Seaton, Looe and Fowey catchment management plan |
539 | The Yarrow catchment : recommendations for statutory water quality objectives |
540 | The evaluation of a Nico Elit 051 ammonium ion selective electrode (220/16/T) |
541 | The National Rivers Authority employee attitude survey : summary |
542 | The Use of a Hydroacoustic Counter for Assessing Salmon Stocks |
543 | Pesticides in the aquatic environment 1997 : executive summary |
544 | The Louth coastal catchment management plan : final report |
545 | Draft protocol for the derivation of Toxicity Based Consents |
546 | The Loddon catchment, Thames : recommendations for statutory water quality objectives |
547 | Assessment of the Impact of Nutrient Removal on Eutrophic Rivers |
548 | Second Coniston OS map related to the Seismic Survey 1983 |
549 | Note 2 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983 |
550 | Note 1 by Professor Gerald Sargent regarding the Coniston Seismic Survey 1983 |