000 00326nam a2200121Ia 4500
008 220303s1986 xx 000 0 und d
041 _aeng
082 _a621.381 LEA / DIG
100 _aLeach, Donald P.
_993954
245 _aDigital principles and applications
250 _a4th ed.
260 _aNew York
_bMcGraw-Hill
_c1986
999 _c102186
_d102186