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.

Description
Physical Description:	50 pages : portrait, diagrams ; 25 cm.
Bibliography:	Bibliography: pages 49-50.