Haku
Viitteet 1-4 / 4
Wood, bark, peat and coal ashes as liming agents and sources of calcium, magnesium, potassium and phosphorus
(Agricultural Research Centre, 1991)
Acid-induced leaching of elements from cultivated soils
(Maatalouden tutkimuskeskus, 1991)
Phosphate adsorption characteristics of two soils responding differently to P fertilization
(Suomen maataloustieteellinen seura, 1991)