000			00347nam a2200133Ia 4500
008			190710s9999 xx 000 0 und d
082			_a517.6 g959
100			_aGupta, P P
245		0	_aCalculus of finite differences and numerical analysis
250			_a21st
260			_aMeerut _bKrishna Prakashan Mandir _c1995
300			_a568
942			_cBK
999			_c20224 _d20224