Gupta, O. P. <br/><br/>
Aquatic weeds :  their menace and control a text book and manual / 
O.P.Gupta 
 - New Delhi :  Today & Tomorrow's Printers & Publishers,  1979 
 - 272 p. :  ill. ;  24cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Aquatic weeds--Control--India<br/>Aquatic weeds--India