TY  - BOOK
AU  - LobachevskiÄ­,N.I.
AU  - Halsted,George Bruce
TI  - Geometrical researches on the theory of parallels
AV  - QA685 .L78 1914
PY  - 1914///
CY  - Chicago [etc.]
PB  - Open Court Publishing Company
KW  - Geometry, Non-Euclidean
KW  - Local
N1  - Bibliography: p. 49-50
ER  -