00418nam a2200109Ia 4500008004100000082001700041100002000058245008200078260002800160300001000188500011000198260420b        |||||||| |||| 00| 0 eng d  a516bB719.NE  aBonola, Roberto  aNon-euclidean geometry; a critical and historical study of its developmentb/  aNew York:bDover,c1955  av. p.  aEnglish Translation with additional appendices by H. S. Carslaw with an introduction by Federigo Enriques