00827nam a2200301 a 450000100080000000500110000800800410001910000190006024500650007926000840014430000090022849000420023765000130027965000160029265000120030865000130032065000090033365300190034265300190036165300180038065300200039865300200041865300160043865300160045470000170047070000200048770000180050712923181997-12-03       1976    bl uuuu     u0uu1 u    #d1 aCARMEAN, W. H.  aHardwoods planted in old fields favored by prior tree cover.  aSaint Paul: USDA. Forest Service, North Central Forest Experiment Stationc1976  a16p.  a(USDA. For. Serv. Res. Paper NC-134).  aBiologia  aNitrogênio  aPlantio  aQuímica  aSolo  aArea degradada  aCaracteristica  aMadeira de ei  aNutricao foliar  aPinus enchinata  aQuercus spp  aRecuperacao1 aCLARK, F. B.1 aWILLIAMS, R. D.1 aHANNAH, P. R.