TY  - GEN
AU  - SCHÖLL, Laura van
TI  - Soil fertility management
SN  - 90-72746-02-3
CY  - Wageningen
KW  - SOIL FERTILITY
KW  - SOL
KW  - FERTILITE DES SOLS
KW  - FERTILITE
KW  - FERTILISER
KW  - CHEMICAL FERTILISER
KW  - ENGRAIS
ER  -