TY  - BOOK
AU  - AHENKORAH, Y.(ed.),
AU  - OWUSU-BENNOAH, E(ed)
AU  - DOWUONA, G.N.N(ed)
TI  - Sustaining soil productivity in intensive African agriculture 
PY  - 1995///
CY  - Wageningen
PB  - Technical Centre for Agricultural and Rural Cooperation
KW  - Soil constraints  and crop production
ER  -