000 00279nam a2200121Ia 4500
008 170912s9999 xx 000 0 und d
082 _a330.12HAL/E
100 _aGEORGE N HALM
245 0 _aECONOMIC SYSTEMS
260 _bOXFORD AND I B H
_c1968
300 _a420
942 _cTB
999 _c44828
_d44828