000 00297nam a2200133Ia 4500
008 220128s9999 xx 000 0 und d
020 _a9780743260886
100 _aPorter,
_92033
245 0 _aCompetitive Strategy,
260 _aFree Press.
260 _c1980
947 _a725
969 _h1
999 _c210272
_d210272