Geometrical researches on the theory of parellels /

Bibliographic Details

Main Author:	Lobachevskiĭ, N. I. (Nikolaĭ Ivanovich), 1792-1856
Format:	Book
Language:	English
Published:	Chicago : Open Court Pub. Co., 1914.
Edition:	New ed.
Subjects:	Geometry, Non-Euclidean.