000 00302nam a2200133Ia 4500
100 _aWilliams/Gerald E
942 _cRB
654 _adigital
245 _aDigital technology
260 _bScience Research Associates
_aChicago
_c1986
082 _a621.38179
_bWIL
300 _a577
546 _aENGLISH
999 _c29478
_d29478