Proceedings of the Symposium on Weed Management 
ed. Bruce A. Auld, Ruben C. Umaly, Siti Soetarmi Tjistrosomo 
 - Bogor  SEAMEO-BIOTROP  1990 
 - BIOTROP special publication  no.38 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Weeds--Control--Congresses