Harper, D .M  /Ferguson, A . J .D <br/><br/>
The ecological basis for river management 
David.  M . Harper and Alastair J.D . Ferguson ( ed ) 
 - Chichester  John Wiley &Sons  1994 
 - xiv, 614p.: ill  hbk 
<br/><br/><label>ISBN: </label>047195151 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology