Gupta, O. P.,  1933- <br/><br/>
Modern weed science in the tropics and sub-tropics / 
by O. P. Gupta and P. S. Lamba. 
 - New Delhi :  Today and Tomorrow's Printers & Publishers,  1978. 
 - viii, 421 p. :  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Weeds--Control--Tropics.