Haku
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Sodium contents different plant species grown side by side
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1986)
Acid-induced leaching of elements from cultivated soils
(Maatalouden tutkimuskeskus, 1991)
Comparative determinations of sodium in rumen fluid, saliva and feeds with the sodium electrode and with the flame photometer
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1966)