TY  - BOOK
AU  - Stahl,Saul
TI  - Gateway to modern geometry: the poincare half-plane
SN  - 9780763753818
U1  - 516.9 ST14G2 
PY  - 2008///
CY  - Sudbury
PB  - Jones and Bartlett
KW  - Euclidean geometry
KW  - Hyperbolic plane
KW  - Inversions
KW  - Spheres
ER  -