The Influence of fertilizer treatment of postures on the mineral composition of the herbage and the incidence of hypomignesemia in dairy cows / H. Ilvidsten(et.al) text Norway : Agricultural college of Norway, 1958 eng Ref.from: Acta agriculturae scandinavica, ix, 1959 pp. 261-191 Ref.from: Acta agriculturae scandinavica, ix, 1959 pp. 261-191 DAIRY CATTLE PASTURES