000 00338nam a2200121Ia 4500
001 104194
008 170722s9999 xx 000 0 und d
100 _aStilwell, Ja
245 _aWorkbook to accopany the fifth edition of an introduction to positive economics /
260 _bELBS ,
_c1979.
300 _aVIII+322
_c29cms
942 _cGEN
999 _c160408
_d160408