00494nam a2200181Ia 4500001001000000003000500010008004100015010001100056040000900067082001700076100001700093245006600110260003200176300001100208440002600219650003700245650003000282Para_1609CHAP220125s1986    xx            000 0 und d  a204540  cCHAP  aPA 631.41 H3  aHaynes, R.J.  aMineral nitrogen in the plant-soil system  /c by R.J. Haynes  aOrlando  :b Academic Press  a483 p.  aPhysiological ecology  aNitrógeno x efecto en plantas  aSuelos x nitrógeno en