TY  - BOOK
AU  - Gray, Jeremy J., 1947-
AU  - Bolyai, J�anos,, 1802-1860. Appendix scientiam spatii absolute veram exhibens. English.
TI  - J�anos Bolyai, non-Euclidean geometry, and the nature of space
SN  - 0262571749
CY  - Cambridge, Mass.
KW  - Geometry, Non-Euclidean
KW  - Space and time
ER  -