TY  - BOOK
AU  - Sillanpaa, Mikko,
TI  - Trace Elements in Soils and Agriculture
U1  - 631 
PY  - 1976///
CY  - Rome
PB  - F. A. O.
KW  - Soil Science
KW  - Techniques, equipment & materials
KW  - Trace Elements
ER  -