000 00285nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aJohns Ton (J)
245 0 _aEconometic methods
260 _bInternational student Eduction
260 _c1972
365 _b233.75
942 _cBK
999 _c204548
_d204548