| 000 | 00395nam a2200121Ia 4500 | ||
|---|---|---|---|
| 008 | 180412s9999||||xx |||||||||||||| ||und|| | ||
| 020 | _a3540097104 | ||
| 040 | _aAhmadu Bello University Library - Zaria | ||
| 100 | _aEpstein, Richard L. | ||
| 245 | 0 |
_aDegrees of unsolvability: structure and theory _cRichard L. Epstein |
|
| 260 |
_aBerlin _bSpringer-Verlag _c1979 |
||
| 300 | _axiv.,240p. | ||
| 500 | _aBibliography: p. 217-234 | ||
| 999 |
_c15695 _d15695 |
||