TY  - BOOK
AU  - "De Waard, P.W.F."
TI  - "Foliar diagnosis, mutrition and yield stability of black pepper (Piper Nigrum L.) in sarawak.(Royal Trop.Inst. Dept.d of Agric. Res. Copmmunication No.59)"
U1  - 633.84   K9 
PY  - 0000///Amsterdam
CY  - 1969
PB  - Royal Tropical Inst.
ER  -