| 1826 | Herbarium Image: Ceratophyllum demersum |
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| 1827 | Draft waste regulation strategy : Environment Agency functional strategies. Consultation document |
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| 1828 | Oedogonium, |
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| 1829 | Herbarium Image: Minuartia verna |
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| 1830 | Weather data: SLURRY-NR, Cambridgeshire, 2004 |
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| 1831 | Weather data: AC0111, Devon, 2008-2009 |
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| 1832 | Daily topsoil mineral nitrogen: SLURRY-NR, Cambridgeshire, 2004 |
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| 1833 | Large volume organic chemicals |
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| 1834 | Understanding Geochemical Fluxes Between Groundwater and Surface Water: Scoping Report |
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| 1835 | Validation of cyanobaterial (blue-green algal) toxin test kit (349/9/A) |
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| 1836 | Herbarium Image: Utricularia minor |
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| 1837 | Efficiency and effectiveness of planning activities : draft final report (293/1/S) |
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| 1838 | 1111111 |
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| 1839 | An investigation of the bacteriological quality of bathing water around the Kent coast since 1985 |
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| 1840 | National Rivers Authority sea defence survey 1990/1991 : survey report phase 1, phase 2 and phase 3 |
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| 1841 | 1996 Hit Lists, Final Draft Annex 1A High Loads summarised by Region |
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| 1842 | National Rivers Authority Severn Trent Region : information (NRA Severn-Trent 50)
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| 1843 | Herbarium Image: Mimulus guttatus |
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| 1844 | Herbarium Image: Circaea x intermedia |
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| 1845 | Chlorella, |
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| 1846 | Volvox globator, |
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| 1847 | Spirulina, |
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| 1848 | Analytical method for the determination of acid herbicides in sandstone and chalk aquifer materials (Draft RanD note) P439/9/A |
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| 1849 | Cephalodella, |
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| 1850 | Herbarium Image: Sanguisorba officinalis |
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