01007nam a2200289 i 450099100071811970753620020507172702.0010124s1970 us ||| | eng 0828401756b10747539-39ule_instLE01301191ExLDip.to Matematicaeng516.9AMS 00A15AMS 51MSommerville, Duncan M'Laren Young534782Bibliography of non-Euclidean geometry /by D. M. Y. Sommerville2nd ed.New York :Chelsea Pub. Co,c1970xii, 410 p. ;21 cmNon-Euclidean geometryBibliography.b1074753920-10-1628-06-02991000718119707536LE013 00A15 SOM11 (1970)12013000125312le013-E0.00-l- 00000.i1083996328-06-02Bibliography of non-Euclidean geometry911729UNISALENTOle01301-01-01ma -engus 01