00554nam a2200205 a 450000100080000000500110000800800410001910000230006024500890008326000280017230000090020049000290020965000160023865300110025465300160026565300100028170000210029170000170031270000190032912651901994-04-14       1974    bl uuuu     u0uu1 u    #d1 aMARANHAO, R. J. L.  aAnasilemineralogica das fracoes calhau e cascalho em solos do agreste de pernambuco.  aRecife:IPA, 1974.c1974  a30p.  a(IPA.Boletim Tecnico,70)  aMineralogia  aBrasil  aPernamabuco  aSolos1 aFALCAO, M. F. L.1 aLEITE, J. P.1 aDANTAS, H. das