000			00404nam a2200145Ia 4500
008			180611s9999||||xx |||||||||||||| ||und||
020			_a70602182
041			_aen
082			_a515.38
100			_aSPIEGEL, Murray R.
245		0	_aTheory And Problems Of Calculus Of Finite Differences And Differences Equations
260			_aNew York, _bMcgraw Hill Book Company, _c1971
300			_a253p.
942			_cLL
999			_c2773 _d2773