Report of the Institute of Freshwater Ecology, 1997-98. 

 - Swindon :    Natural Environment Research Council,    1998. 
 - 74 p. :    ill. ;    30 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Hydrology -- Periodicals.<br/> Freshwater ecology -- Periodicals.