Williams, D. Dudley. <br/><br/>
Aquatic insects / 
D. Dudley Williams and Blair W. Feltmate. 
 - Walingford, Oxon :  C. A. B. International,  c1992. 
 - xiii, 358 p. :  ill. 
<br/><br/><label>ISBN: </label>0851987826 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aquatic insects.