2101 | Herbarium Image: Filipendula ulmaria |
2102 | Dinobryon bavaricum |
2103 | Paraleptophlebia tumida |
2104 | Cilate, |
2105 | Catches of Brown Trout in the River Don - Preliminary analysis of Angler's Returns |
2106 | Decommissioning redundant boreholes and wells |
2107 | River Foss flood alleviation scheme |
2108 | Demands and resources of water undertakers in England and Wales : preliminary report under Section 143(2)(a) Water Act 1989 |
2109 | Herbarium Image: Circaea x intermedia |
2110 | Hydra, |
2111 | Micrasterias, |
2112 | Herbarium Image: Festuca arundinacea |
2113 | Herbarium Image: Eupatorium cannabinum |
2114 | Spirogyra group, |
2115 | Herbarium Image: Helictotrichon pubescens |
2116 | Phacus, |
2117 | Herbarium Image: Undetermined |
2118 | Herbarium Image: Potamogeton x angustifolius |
2119 | Scenedesmus, |
2120 | Regional water quality monitoring and surveillance programme for 1992 : biological quality assessment of rivers |
2121 | Oscillatoria (Planktothrix), |
2122 | Herbarium Image: Pinguicula lusitanica |
2123 | Herbarium Image: Chara aculeolata |
2124 | Herbarium Image: Huperzia selago |
2125 | Zygorhizidium |