000 00281nam a2200121Ia 4500
020 _a0070369836
082 _a001.64
_bLED
100 _aLedgard
_940333
245 _aFrom Baker street to Binary
_cHenry Ledgard
260 _aAmerica
_bMcGraw Hill
_c1983
300 _a278
942 _cBK
999 _c1975
_d1975