Thornes John <br/><br/>
River Channels 
John Thornes 
 - London  Macmillan   1986 
 - 46p.:ill.  Hbk 
<br/><br/><label>ISBN: </label>0333242432 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Watersheds
<br/><br/><label>LC Class. No.: </label>GB980.T4  / 1979