TY  - BOOK
AU  - Schroth, G. ed.
AU  - Sinclair, F.L. jt. ed.
TI  - Trees, crops and soil fertility concepts and research methods
SN  - 0851995934
U1  - 631.42 S 75 T 
PY  - 2003///
CY  - UK
PB  - CABI
KW  - Soil Fertility
ER  -