Haku
Viitteet 1-4 / 4
Two-phase extraction technique for determination of soluble trace elements in soils
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1967)
Comparisons of five soil testing methods for phosphorus determination
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1967)
The effect of rate of leys and intensity of nitrogen dressing in different crop rotations : results obtained in the years 1958-65 from a rotation trial established at Tikkurila in 1952
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1967)
Über die Bestimmung der austauschbaren Basen des Bodens, seines Wasserstoffes und ihrer Summen
(Agricultural Research CentreMaatalouden tutkimuskeskus, 1967)