TY  - BOOK
ED  - International conference on trace elements in soils and crops (1966 : London)
TI  - Proceeding on trace elements in soils and crops
U1  - J:1p1,N66, L1 
PY  - 1971///
CY  - London
PB  - Her Majesty's Stationery Office      
KW  - Agriculture
ER  -