2226 | Herbarium Image: Utricularia minor |
2227 | Herbarium Image: Cochlearia officinalis |
2228 | Micractinium, |
2229 | Herbarium Image: Filipendula ulmaria |
2230 | Dinobryon bavaricum |
2231 | Paraleptophlebia tumida |
2232 | Cilate, |
2233 | Catches of Brown Trout in the River Don - Preliminary analysis of Angler's Returns |
2234 | Decommissioning redundant boreholes and wells |
2235 | River Foss flood alleviation scheme |
2236 | Demands and resources of water undertakers in England and Wales : preliminary report under Section 143(2)(a) Water Act 1989 |
2237 | Herbarium Image: Circaea x intermedia |
2238 | Hydra, |
2239 | Micrasterias, |
2240 | Herbarium Image: Festuca arundinacea |
2241 | Herbarium Image: Eupatorium cannabinum |
2242 | Spirogyra group, |
2243 | Herbarium Image: Helictotrichon pubescens |
2244 | Phacus, |
2245 | Herbarium Image: Undetermined |
2246 | Herbarium Image: Potamogeton x angustifolius |
2247 | Scenedesmus, |
2248 | Regional water quality monitoring and surveillance programme for 1992 : biological quality assessment of rivers |
2249 | Oscillatoria (Planktothrix), |
2250 | Herbarium Image: Pinguicula lusitanica |