Townsend, Colin R <br/><br/>
The ecology of streams and rivers / 
Colin R. Townsend 
 - London :  Edward Arnold ,  1980 
 - 68 p. :  ill . ;  22 cm . 
 - The Institute of Biology's studies in biology  no.122 .
<br/><br/>References : p .67 -68 
<br/><br/><label>ISBN: </label>0713128046 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Stream ecology