YOU SONGLY; យូ សុងលី <br/><br/>
Control measures for the brown planthopper (nilaparvata lungerns stal) 

 - Phnom Penh  RUA  2010 
 - x;51p;  ill;  29cm; 
<br/><br/><label>Dewey Class. No.: </label>MGR YOU B430 2010 Or.