000 00316nam a2200145Ia 4500
100 _aTokheim/Roger L
942 _cBK
654 _aDigital principles
245 _aDigital principles
260 _bMc Graw Hill
_aSingapore
_c1988
082 _a621.38179
_bTOK
300 _a323
546 _aENGLISH
999 _c27668
_d27668