Environment :  rivers and lakes /  
prepared by the Course Team. 
 - [London]:   The Open University Press,   [c1972].  
 - 72 p. :  ill., maps, tables ;  30 cm. 
 - Science : a second level course / The Open University   : geology .
<br/><br/><label>ISBN: </label>9780335020928 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Environment
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rivers<br/>Lakes--Data processing
<br/><br/><label>Dewey Class. No.: </label>551.6