000			00311nam a2200145Ia 4500
008			190201s9999 xx 000 0 und d
082			_a515
082			_b62 S98
100			_a"Saxena, H C"
245		0	_aFinite Differences and N
260			_aNew Delhi
260			_bS.C.C
260			_c1983
300			_a342
999			_c21702 _d21702