TY  - BOOK
AU  - Sommerville,D.M.Y.
ED  - Asutosh Collection (National Library, India)
TI  - The elements of non-euclidean geometry
U1  - 513.8 
PY  - 1914///
CY  - London
PB  - C. Bell
KW  - Geometry, Non-Euclidean
N1  - Includes index
ER  -