000 00310pam a2200121a 44500
010 _a59015055
082 _a510.7834
_bL499D
100 _aLedley, Robert Steven
245 1 _aDIGITAL COMPUTER AND CONTROL ENGINEERING
260 _a
_bMcgraw-Hill Book Company, Inc.
_c1960
964 _gCIRC
997 _a7685 C
999 _c409673
_d409673