00672nam a2200193 a 450000100080000000500110000800800410001902000190006010000180007924501180009726000720021530000100028750000630029765000240036065000250038465000240040965000240043365000210045710389242014-02-22       1986    bl uuuu     u00u1 u    #d  a 91-576-2819-x1 aANDERSSON, R.  aLosses of nitrogen and phosphorus from arable land in Swedenbmagnitude, regulating factors and measures proposed  aUppsala (Suecia): Swedish University of Agricultural Sciencesc1986  a215p.  aTesis (Ph.D.) Swedish University of Agricultural Sciences,  aAGUA DE ESCORRENTIA  aAPLICACION DE ABONOS  aDETERIORO DEL SUELO  aEROSION POR EL AGUA  aMANEJO DEL SUELO