000			00355nam a2200157Ia 4500
008			230523s9999 xx 000 0 und d
082			_a621.38153 LEA
100			_aLeach, Donald P.
245		0	_aDigital Principles and Applications. Ed.8
250			_a8
260			_aDelhi
260			_bMcGraw-Hill
260			_c2019
300			_a705
942			_cTB
999			_c1997 _d1997