00499nam a2200193Ia 4500001000700000003000500007008004100012010001100053040000900064082001700073100002200090245010000112260003200212300001100244440000500255500000500260503000500265650003500270Z_2642CHAP220113s1981    xx            000 0 und d  a165702  cCHAP  a581.13345 S5  aFrissel, M      J  aSimulation of nitrogen behaviour of soil-plant systems  /cby  M. J. Frissel and J. A. Van Veen  aWageningen  :bPUDOC,c1981  a277 p.  a  a  a  aNitrógeno I. Veen, J. A. Van