TY  - BOOK
AU  - Stahl, Saul
TI  - A gateway to modern geometry : the Poincaré half-plane
SN  - 9780763753818
U1  - 516.9 STA 
PY  - 2008///
CY  - Sudbury, MA
PB  - Jones and Bartlett Publishers
KW  - Geometry, Non-Euclidean
ER  -