00564naa a2200205 a 450000100080000000500110000800800410001910000180006024501040007826000090018265000110019165000200020265000160022265000090023865300080024770000190025570000200027470000180029477300460031216114531995-06-27       1989    bl uuuu     u00u1 u    #d1 aHARPER, L. A.  aEnvironmental effects on nitrogen dynamics in soybean under conservation and clean tillage systems.  c1989  aManejo  aMineralização  aNitrogênio  aSoja  aFBN1 aGIDDENS, J. E.1 aLANGDALE, G. W.1 aSHARPE, R. R.  tAgron. J.gv. 81, n. 4, p. 623-631, 1989.