Gupta, O P <br/><br/>
Aquatic weeds:  Their menace and control 

 - New Delhi:  Tomorrow's Printers & Publishers,  1979 
 - 272p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Subjects--Index Terms: </label>Physical control  Biological control 
<br/><br/><label>Universal Decimal Class. No.: </label>632.51(204)   / L9