000 00286nam a2200121Ia 4500
008 250224s9999 xx 000 0 und d
020 _a273252683
082 _a330SIL
100 _aSilverman H.A
245 4 _aThe substance of economics
260 _bPitman house
_c1964
942 _cBK
999 _c433865
_d433865