000 00321nam a2200121Ia 4500
008 170101s1976 xx 000 0 und d
082 _a020 VIS
100 _aViswanathan C. G.
245 0 _aElements of Information Science
260 _aNew Delhi
_bToday & Tomorrow Book Co.
_c1976
300 _a121 p.
942 _2ddc
_cB
999 _c561166
_d561166