TY  - BOOK
AU  - Zen Zahari
AU  - Basuki
TI  - Prospect of the use of smallholder rubber planting materials as an alternative to minimize the cost price
PB  - In: Prosidings of the Lokakarya Nasional Pemuliaan Tanaman Karet, Medan 1992; p319-338
KW  - Planting material
KW  - Rubbe smallholder
ER  -