000			00305nam a2200133Ia 4500
008			220421s9999||||xx |||||||||||||| ||und||
040			_aET
100			_aForowzan
245		0	_aData Communications and networking
260			_bMC Graw Hill _aNEW DELHI
300			_a1226
500			_a49258
942			_cBK
999			_c55273 _d55273