Newbold, Chris. <br/><br/>
Nature conservation and river engineering / 
by Chris Newbold, Jeremy Purseglove and Nigel Holmes. 
 - London :  Nature Conservancy Council,  1983. 
 - 36p. 
<br/><br/> Ill on inside covers. 
<br/><br/><label>ISBN: </label>0861392213 (pbk) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Stream ecology--Great Britain.<br/>Rivers--Regulation--Environmental aspects--Great Britain.