TY  - BOOK
AU  - Greenland,D.J.
ED  - International Institute of Tropical Agriculture
TI  - Characterization of soils in relation to their classification and management for crop production: examples from some areas of the humid tropics 
SN  - 019854538x
PY  - 1981///
CY  - Oxford
PB  - Clarendon Press
KW  - Soils fertility
KW  - Soils
KW  - Nigeria
N1  - Includes index
ER  -