000 00309nam a22001337a 4500
008 180115b xxu||||| |||| 00| 0 eng d
020 _a053455458X
041 _aeng
080 _a070
100 _a39
101 _aMED
245 _aIntroduction to communication
_cVerderber,R.F
942 _2udc
_cBK
999 _c40292
_d40292