TY  - BOOK
AU  - Sillanpaa, Mikko.
TI  - Trace elements in soils and agriculture
T2  - FAO Soils Bulletin, 17
U1  - 631.416.9(047) L2 
PY  - 1972///
CY  - Rome
PB  - FAO
KW  - Mikko Sillanpaa
KW  - Trace elements-soil
ER  -