TY  - BOOK
AU  - Kulczycki,Stefan
AU  - Knapowski,Stanislaw
TI  - Non-Euclidean geometry
U1  - 513.8 
PY  - 1961///
CY  - Oxford
PB  - Pergamon Press
KW  - Geometry, Non-Euclidean
KW  - Geometry, Hyperbolic
KW  - Mathematics
N1  - Includes index
ER  -