000 00275nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aMcQail (D) and Windahl(S)
245 0 _aCommunication models
260 _bLongman
260 _c1981
365 _b49.73
942 _cBK
999 _c214060
_d214060