000			00311nam a2200133Ia 4500
008			201224s9999||||xx |||||||||||||| ||und||
020			_a0538-01870-4
100			_aGupta, P C _92898
245		0	_aData Communications
260			_acalcutta _bD. Chakraborty _c1994
300			_a10th
500			_a107
942			_cBK
999			_c7641 _d7625