00434nam a2200133Ia 4500008004100000082001900041100002300060245005100083260004600134300002800180440003300208700002900241700003000270260128b        |||||||| |||| 00| 0 eng d  a511.3bM287.RA  aMansfield, Richard  aRecursive aspects of descriptive set theoryb/  aNew York:bOxford University Press,c1985  avii, 144p. Index, Bibl.  aOxford Logic guides ; no. 11  aWeitkamp, Galeneauthor.  aSimpson, Stepheneauthor.