000 00315nam a2200145Ia 4500
008 190201s9999 xx 000 0 und d
082 _a384
082 _bWIL
100 _a"Williams, Frederick"
245 4 _aThe Communications Revol
260 _aNew Delhi
260 _bS.P.
260 _c1982
300 _a291
999 _c20857
_d20857