00505nam a2200181Ia 4500082002000000100002600020245003100046260003500077300001000112490004200122500000500164690000600169700000500175952010200180964001700282921000900299999001500308  a511.3bSh559.DU  aShoenfield, Joseph R.  aDegrees of unsolvabilityb  aAmsterdambNorth-Hollandc1971  a111p.  aNorth-Holland Mathematics studiesv 2  a  a   a  001040708GRaISIbISId1998-09-07l0o511.3 Sh559.DUpG69r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a8818  c8818d8818