01006nam a2200301 i 450099100102319970753620020507181822.0960906s1973 us ||| | eng 0122748506b1079038x-39ule_instLE01305879ExLDip.to Matematicaeng516.9AMS 51-01AMS 51-XXAMS 51M10Gans, David535779An introduction to non-euclidean geometry /David GansNew York :Academic Press,1973xii, 274 p. :ill. ;24 cmBibliography: p. 263Non-Euclidean geometry.b1079038x20-10-1628-06-02991001023199707536LE013 51M GAN11 (1973)12013000058894le013-E0.00-l- 06060.i1089089028-06-02Introduction to non-euclidean geometry921289UNISALENTOle01301-01-96ma -engus 31