00680nam0-22002531i-450-990001291950403321000129195FED01000129195(Aleph)000129195FED0100012919520000920d--------km-y0itay50------baengGeneralized recursion theoryAmsterdam [etc.]North-HollandStudies in logic and the foundations of mathematicsITUNINARICAUNIMARCBK990001291950403321C-30-(7915275MA1MA1Generalized recursion theory353885UNINAING01