TY  - BOOK
AU  - Stahl,Saul
TI  - A gateway to modern geometry: the Poincaré half-plane 
SN  - 9780763753818
AV  - QA685 S725 2008
U1  - 516.9 22
PY  - 2008///
CY  - Sudbury, Mass.
PB  - Jones and bartlett
KW  - Geometría no euclidiana
ER  -