LEADER 00988nam a22002655i 4500 001 991002189839707536 007 cr nn 008mamaa 008 121227s1979 gw | s |||| 0|eng d 020 $a9783540384809 035 $ab1413522x-39ule_inst 040 $aBibl. Dip.le Aggr. Matematica e Fisica - Sez. Matematica$beng 082 04$a510$223 100 1 $aEpstein, Richard L.$046609 245 10$aDegrees of unsolvability: structure and theory$h[e-book] /$cby Richard L. Epstein 260 $aBerlin :$bSpringer,$c1979 300 $a1 online resource (xiv, 246 p.) 440 0$aLecture Notes in Mathematics,$x0075-8434 ;$v759 650 0$aMathematics 773 0 $aSpringer eBooks 856 40$uhttp://dx.doi.org/10.1007/BFb0067135$zAn electronic book accessible through the World Wide Web 907 $a.b1413522x$b03-03-22$c05-09-13 912 $a991002189839707536 996 $aDegrees of unsolvability$981037 997 $aUNISALENTO 998 $ale013$b05-09-13$cm$d@ $e-$feng$ggw $h0$i0