000 00251nam a2200109Ia 4500
008 230401s9999 xx 000 0 eng d
100 _awalther (s), levine (j),
245 0 _ae commerce prog.
250 _a2
260 _bTECHMEDIA
942 _2ddc
_cBTECH
999 _c5969
_d5969