000 00298nam a2200121Ia 4500
008 220201s1992 xx 000 0 eng d
041 _aENG
100 _aHUGHES, L
245 0 _aDATA C OMMUNICATIONS
260 _aLONDON
_bTHAMES AND HUDSON PUBLISHING COMPANY
_c1992
300 _a470
942 _2ddc
999 _c61125
_d61125