Proceedings of the 21st Asian Pacific Weed Science Society (APWSS) Conference : Colombo, Sri Lanka, 6-8 November 2013/ 
 APWSS. 
editors B Marambe, UR Sangkkara, Wajm De Costa and ASK Abeysekara. 
 - Colombo, Sri Lanka. :  University of Peradeniya :  Chemical Industries (Colmbo) Ltd,  2007. 
 - 706 p. :  ill. ;  29 cm. 
<br/><br/> Gift 
<br/><br/>Includes bibliographic references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Weeds--Congresses.<br/>Weeds--Control--Congresses.