Heong, Kong Luen, <br/><br/>
A systems analysis approach to the problem of brown planthopper on rice in Peninsular Malaysia / 
Heong Kong Luen. 
 - London :  University of London Library,  1986. 
 - 4 microfiches ;  11 x 15 cm. 
<br/><br/>Thesis (Ph.D.) - University of London, 1986. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rice brown spot disease.<br/>Rice--Diseases and pests--Malaysia.