Ong, Ching Ang <br/><br/>
Short notes : A whitefly-Borne virus disease of Ageratum coryzoides (Linn), in Malaysia  [article] / 
Ong Ching Ang, Ting Wen Poh and Lim Yan Chuan 
 - Serdang :  MARDI,  1977 
 - p : 148 
<br/><br/> Disember, 1977 (j.4 jil.2)