TY  - BOOK
AU  - Ryan, Patrick J.
AU  - Ryan, Patrick J.
TI  -  Euclidean and non-Euclidean geometry:  : an analytical approach
U1  - 516 RYA 
PY  - 1986///
CY  - London
PB  - :Cambride University Press
KW  - Mathematics
KW  - Geometry
KW  -  Geometry, Plane
KW  - Geometry, Non-Euclidean
KW  - Géométrie euclidienne
ER  -