000 00301nam a2200121Ia 4500
008 220201s1997 xx 000 0 eng d
041 _aENG
100 _aNTTF R CENTRE
245 0 _aDIGITAL ELECTRONICS
260 _aLONDON
_bTHAMES AND HUDSON PUBLISHING COMPANY
_c1997
300 _a184
942 _2ddc
999 _c61306
_d61306