000 00310nam a2200121Ia 4500
008 240112s9999 xx 000 0 und d
082 _aWYK-I
_b330
100 _aWykstra, Ronald A
245 0 _aIntroductory economics
260 _a New York
_bHarper & Row Publishers
_c1971
650 _aEconomics
942 _cBK
999 _c23356
_d23356