Haku
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Possible causal relationship between the easily soluble amount of manganese on arable mineral soil and susceptibility to cancer in Finland
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1969)
Availability of soil reserves of copper, iron and manganese
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1978)
Possible causal relationship between nutritional imbalances especially manganese deficiency and susceptibility to cancer in Finland
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1972)