TY  - BOOK
AU  - Fenchel,W.
TI  - Elementary geometry in hyperbolic space
SN  - 0899254934
AV  - QA685 .F38 1989
PY  - 1989///
CY  - Berlin, New York
PB  - W. de Gruyter
KW  - Geometry, Hyperbolic
N1  - Includes index
ER  -