000 00312nam a2200121Ia 4500
001 102823
008 170722s9999 xx 000 0 und d
100 _aMichaely, Michael
245 _aconcentration in international trade /
260 _c1967.
490 _aContributions to economic analysis 28
942 _cGEN
999 _c75159
_d75159