00393naa a2200145 a 450000100080000000500110000800800410001910000210006024500550008126000090013665000100014565000130015565300260016877300530019416041601995-06-27       1982    bl ---       0--  u    #d1 aJENKINSON, D. S.  aThe nitrogen cycle in long-term field experiments.  c1982  aCampo  aHistoria  aBALANCO DE NITROGENIO  tPhil. Trans. Royal Soc.gv.296, p.563-571, 1982.