1576 | Cyanophyte, |
1577 | Hydrurus, |
1578 | Resting spore |
1579 | Green algae, |
1580 | Flow protection criteria for adult salmon - phase 3 case studies |
1581 | Fragilaria, |
1582 | Fisheries statistics 1994 : salmonid and freshwater fisheries statistics for England and Wales |
1583 | Herbarium Image: Oenanthe lachenalii |
1584 | Herbarium Image: Carex nigra |
1585 | Herbarium Image: Potamogeton filiformis |
1586 | Welsh sheep dip monitoring programme : 1999 |
1587 | Herbarium Image: Juncus bulbosus |
1588 | Herbarium Image: Galium palustre |
1589 | Herbarium Image: Dactylorhiza incarnata |
1590 | Upgrading of Nox Reduction Equipment Fitted to Large Fossil Fuel Power Station Boilers |
1591 | Marine phytoplankton : standard methodologies: final draft : biology laboratory procedures manual. Section C : test methods and procedures |
1592 | Herbarium Image: Ceratophyllum demersum |
1593 | Herbarium Image: Ranunculus peltatus |
1594 | Herbarium Image: Festuca arenaria var. arenaria |
1595 | River quality : July 1991 - June 1992 |
1596 | Herbarium Image: Chara vulgaris |
1597 | Mallomonas, |
1598 | Synedra, |
1599 | Herbarium Image: Osmunda regalis |
1600 | Herbarium Image: Hieracium murorum |