Aquatic vegetation and its use and control 
/ edited by D.S. Mitchell 
 - [Paris]  United nations  1974 
 - 135 p. 
<br/><br/> Includes references and index. 
<br/><br/><label>ISBN: </label>9231010824 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants
<br/><br/><label>Dewey Class. No.: </label>581.92  / AQU