000 00270nam a2200109Ia 4500
999 _c3391
_d3391
008 190326s9999 xx 000 0 und d
082 _a378.242 P97D
100 _aPunagin,R.P.
_9137
245 0 _aDigital Switching System
260 _aSurathkal
_bK.R.E.C
_c1980
942 _cTH