000 00271nam a22001217a 4500
020 _aNA
082 _222
_a658.15
100 _aPng Ivan.
245 _aManagerial Economics /
260 _aBlack well,
_bBlack well,
_cc1998
300 _a571 p,;
_bNA
_c24cm
942 _2ddc
_cGEN
999 _c1740
_d1740