TY  - BOOK
AU  - Pardekooper, E C
TI  - Manual of field experimentation on rubber. Pt 2. Recording techniques
T2  - Strengthening research on rubber and oil palm in North Sumatra 135
U1  - NR:63 (035) 
PY  - 1976///
CY  - Medan
PB  - FAO
ER  -