000 00305nam a2200121Ia 4500
008 211209s1988 xx 000 0 und d
020 _a0071003436
041 _aeng
100 _aSCHWEBER,WILLIAM.L
245 _aDATA COMMUNICATIONS
260 _aNEWYORK
_bMAC GRAW HILL BOOK CO.
_c1988
300 _aV + 564
999 _c99095
_d99095