000 00429nam a2200181Ia 4500
082 _a511.3
_bSa121.DU
100 _aSacks, Gerald E.
245 _aDegrees of unsolvability
_b
250 _a2nd.
260 _aNew Jersey
_bPrinceton University Press
_c1966
300 _aix, 174p. Bibl.
490 _aAnnals of Mathematics studies
_v 55
500 _a
690 _a
700 _a
964 _a
_b
_c
_d
_e
_f
_g
921 _a8802
999 _c8802
_d8802