1626 | Hydrurus, |
1627 | Resting spore |
1628 | Green algae, |
1629 | Flow protection criteria for adult salmon - phase 3 case studies |
1630 | Fragilaria, |
1631 | Fisheries statistics 1994 : salmonid and freshwater fisheries statistics for England and Wales |
1632 | Herbarium Image: Oenanthe lachenalii |
1633 | Herbarium Image: Carex nigra |
1634 | Herbarium Image: Potamogeton filiformis |
1635 | Welsh sheep dip monitoring programme : 1999 |
1636 | Herbarium Image: Juncus bulbosus |
1637 | Herbarium Image: Galium palustre |
1638 | Herbarium Image: Dactylorhiza incarnata |
1639 | Upgrading of Nox Reduction Equipment Fitted to Large Fossil Fuel Power Station Boilers |
1640 | Marine phytoplankton : standard methodologies: final draft : biology laboratory procedures manual. Section C : test methods and procedures |
1641 | Herbarium Image: Ceratophyllum demersum |
1642 | Herbarium Image: Ranunculus peltatus |
1643 | Herbarium Image: Festuca arenaria var. arenaria |
1644 | River quality : July 1991 - June 1992 |
1645 | Herbarium Image: Chara vulgaris |
1646 | Mallomonas, |
1647 | Synedra, |
1648 | Herbarium Image: Osmunda regalis |
1649 | Herbarium Image: Hieracium murorum |
1650 | Herbarium Image: Tolypella prolifera |