00663nam a2200241 a 450000100080000000500110000800800410001902000180006010000150007824500930009326000350018630000110022165000230023265000250025565000100028065000210029065000310031165000180034265000110036070000170037170000180038870000150040610018552021-07-13       1996    bl uuuu     u00u1 u    #d  a0-8493-2802-01 aPAUL, E.A.  aSoil organic matter in temperate agroecosystemsblong-term experiments in North America.  aBoca Raton, FL (US): CRCc1996  a414 p.  aECOLOGIA DEL SUELO  aFERTILIDAD DEL SUELO  aHUMUS  aMANEJO DEL SUELO  aMATERIA ORGANICA DEL SUELO  aPRODUCTIVIDAD  aSUELOS1 aPAUSTIAN, K.1 aELLIOTT, E.T.1 aCOLE, C.V.