00562naa a2200193 a 450000100080000000500110000800800410001910000150006024501100007526000090018565000130019465000230020765000130023070000180024370000180026170000190027970000170029877300530031516139971995-06-27       1990    bl ---       0--  u    #d1 aSAGGAR, S.  aA nutrient-transfer model to explain the fate of phosphorus and sulphur in a grazed hill-country pasture.  c1990  aFósforo  aModelo Matemático  aPastagem1 aMACKAY, A. D.1 aHEDLEY, M. J.1 aLAMBERT, M. G.1 aCLARK, D. A.  tAgric. Ecosyst. Environ.gv.30, p.295-315, 1990.