Joo, Goh Kah <br/><br/>
K nutrition for mature oil palm in Malaysia / 
Goh kah Joo ; Chew Poh Soon ; Kee Khan Kiang 
 - Basel :  International Potash Institute ,  1994 
 - 36 p. :  ill. ;  21 cm. 
 - IPI Research Topics ;  no. 17 .