TY  - BOOK
AU  - "Wessel, M."
TI  - Fertilizer requirements of cacao(Theobroma cacao L.) in South Western Nigeria (Royal Trop.Inst. Dept.d of Agric. Res. Copmmunication No.61)
U1  - 633.74.631.8   L1 
PY  - 0000///Amsterdam
CY  - 1971
PB  - Royal Tropical Inst.
ER  -