00460nam a2200169 a 450000100080000000500110000800800410001910000730006024500270013326000170016030000100017749000580018765000090024565000130025465000090026765000140027612972592006-03-30       1985    bl uuuu      00u1 u    #d1 aESTADOS UNIDOS. Department of Agriculture. Soil Conservation Service  aKeys to soil taxonomy.  a[S.l.]c1985  a244p.  a(USDA. Soil Conservation Service. Tech. Monograph, 6)  asoil  ataxonomy  aSolo  aTaxonomia