Haku
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Readily soluble trace elements in Finnish soils
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1966)
A study on the method of spectrophotometric determination of traces of iron in soil extracts with nitroso-r salt
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1968)
Two-phase extraction technique for determination of soluble trace elements in soils
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1967)
Mineral composition of Finnish timothy
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1969)