TY  - BOOK
AU  - Iversen,Birger
TI  - Hyperbolic geometry
SN  - 978-0-521-43528-4
AV  - MATH QA685.I94 
PY  - 1992///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Geometry
KW  - hyperbolic
N1  - Includes bibliography and index
ER  -