TY  - BOOK
AU  - Sillanpaa, Mikko.
TI  - Trace elements in soils and agriculture
T2  - FAO soils bulletin
SN  - 9251004854 (pbk.)
U1  - 631.416 
PY  - 1972///
CY  - Rome
PB  - Food and Agriculture Organization of the United Nations
KW  - Soils
N1  - issued with the support of the Swidish International Development Authority (SIDA)
ER  -