1576 | Fragilaria, |
1577 | Fisheries statistics 1994 : salmonid and freshwater fisheries statistics for England and Wales |
1578 | Herbarium Image: Oenanthe lachenalii |
1579 | Herbarium Image: Carex nigra |
1580 | Herbarium Image: Potamogeton filiformis |
1581 | Welsh sheep dip monitoring programme : 1999 |
1582 | Herbarium Image: Juncus bulbosus |
1583 | Herbarium Image: Galium palustre |
1584 | Herbarium Image: Dactylorhiza incarnata |
1585 | Upgrading of Nox Reduction Equipment Fitted to Large Fossil Fuel Power Station Boilers |
1586 | Marine phytoplankton : standard methodologies: final draft : biology laboratory procedures manual. Section C : test methods and procedures |
1587 | Herbarium Image: Ceratophyllum demersum |
1588 | Herbarium Image: Ranunculus peltatus |
1589 | Herbarium Image: Festuca arenaria var. arenaria |
1590 | River quality : July 1991 - June 1992 |
1591 | Herbarium Image: Chara vulgaris |
1592 | Mallomonas, |
1593 | Synedra, |
1594 | Herbarium Image: Osmunda regalis |
1595 | Herbarium Image: Hieracium murorum |
1596 | Herbarium Image: Tolypella prolifera |
1597 | Herbarium Image: Frangula alnus |
1598 | Recommendations For The Processing And Presentation Of Groundwater Quality Data |
1599 | Herbarium Image: Hydrocotyle vulgaris |
1600 | Spirulina, |