TY  - BOOK
AU  - Kulczycki, Stefan
TI  - Non-Euclidean geometry
SN  - 9780486462646
SN  - 200704275
U1  - 516.9 KUL 
PY  - 2008///
CY  - Mineola, NY
PB  - Dover Publications
KW  - Geometry, Non-Euclidean
N1  - Originally published: New York : Pergamon Press, 1961. Includes index
ER  -