LEADER 00756nam0-22002771i-450- 001 990001258010403321 035 $a000125801 035 $aFED01000125801 035 $a(Aleph)000125801FED01 035 $a000125801 100 $a20000920d1981----km-y0itay50------ba 101 1$aeng 200 1 $a<>non euclidean hyperbolic plane$fby Kel ly and Mattews 210 $aNew York [etc.]$cSpringer-Verlag$d1981 225 1 $aUniversitext 700 1$aKelly,$bPaul$0376154 702 1$aKelly,$bPaul 702 1$aMattews,$bG. 801 0$aIT$bUNINA$gRICA$2UNIMARC 901 $aBK 912 $a990001258010403321 952 $aC-6-(6$b4734$fMA1 959 $aMA1 996 $aNon euclidean hyperbolic plane$9381056 997 $aUNINA DB $aING01