TY  - BOOK
AU  - -
AU  - Sanginga, Nteranya 
AU  - Woomer, Paul L. 
ED  - Tropical Soil Biology and Fertility Institute.
TI  - Integrated soil fertility management in Africa : : principles, practices, and developmental process
SN  - -
KW  - Soil fertility -- Africa.
KW  - Soils -- Africa.
KW  - Soil fertility
ER  -