000			00410nam a2200157Ia 4500
008			230917s9999||||xx |||||||||||||| ||und||
040			_e76455 _aMAIN
041			_aEnglish
082			_a004.6 H165D
100			_aHalsall, Fred
245		0	_aData communications, computer networks and open systems
250			_a4th ed.
260			_aSingapore _bAddison-Wesley _c2000
300			_axv, 907 p.
942			_cBK
999			_c105366 _d105366