TY  - BOOK
AU  - Ryan,Patrick J.
TI  - Euclidean and non-euclidean geometry: an analytic approach 
SN  - 0521256542
PY  - 1987///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Geometry
KW  - Geometry, Non
KW  - Euclidean
ER  -