000 00300nam a2200133Ia 4500
008 200512s9999 xx 000 0 und d
082 _a616
100 _aClement
245 0 _aTextbook of Communication & Education Tech
250 _a2
260 _bEmmess
_c2010
440 _v-
650 _ageneral
999 _c55069
_d55069