000 00281pam a2200121a 44500
010 _a57012895
082 _a517.5
_bD29C
100 _aDavis,Martin.
245 1 _aCOMPUTABILITY & UNSOLVABILITY
260 _a
_bMcgraw-Hill Book Company
_c1958
964 _gCIRC
997 _a7115 C
999 _c407537
_d407537