000 00375nam a2200133Ia 4500
008 100324s9999 xx 000 0 und d
100 _aConstant K.M; Sheldrick W.F
245 _aWorld nitrogen survey
260 _c1992
_bWorld Bank
_aWashington DC
366 _b1992
650 _aAccounting
942 _cBK
999 _c75119
_d75119