000 00276nam a22001217a 4500
020 _a0070369836
082 _a001.64
_bLED
100 _aLedgard, Henry
245 _aFrom baker street to binary
260 _bMcgraw hill book company
_c1943
300 _a275 Pages
942 _cL
999 _c17707
_d17707