TY  - GEN
AU  - Martnedt, J. J.
TI  - Micronutrientes in agriculture
T2  - Soil Science Society of American Book 
VL  - 4
SN  - 0-89118-797-9
PY  - 1991///
CY  - Madison
PB  - Soil Science Society of America
KW  - Micronutrientes
KW  - Fertilizantes
KW  - 631.8
KW  - F04
ER  -