00725nam a22002297a 4500003000500000005001700005008004100022010000800063011000900071035000800080040000900088082001600097100002400113245004600137260004600183300003100229500001100260500014400271650003200415650002800447700002000475CHAP20220329132951.0971013s1988            r     00010     d  a753  a1725  a901  cCHAP  a631.411bJ400aJenkinson, David S.  aNitrogen efficiency in agricultural soils  aLondon :bElsevier Applied Science,c1988  a450 p.b: ilus. ; gráfs.  a37-227  aSeminar on Nitrogen Efficiency in Agricultural Soils and the Efficient use of Fertilizer Nitrogen, held in Edinburgh, 16-18 September 1987.14aFertilizantes nitrogenados.14aSuelosxNitrógeno en.0 aSmith, Keith A.