00455naa a2200133 a 450000100080000000500110000800800410001910000160006024501290007626000090020570000220021470000160023677300690025218379912010-01-10       1985    bl ---       0--  u    #d1 aBALL, B. C.  aCultivation and nitrogen requirement for winter barley as assessed from a reduced-tillage experiment on a brown forest soil.  c19851 aO'SULLIVAN, M. F.1 aLANG, R. W.  tSoil & Tillage Research, Amsterdamgv. 6, n. 2, p. 95-109, 1985.