TY  - BOOK
AU  - Calin, Ovidiu
TI  - Euclidean and non-Euclidean geometry: a metric approach 
SN  - 0471709425
AV  - QA445 .C.35 2005
PY  - 2005///
CY  - Hoboken
PB  - John Wiley & sons Inc.
KW  - geometry
ER  -