Geometrical researches on the theory of parallels /
Lobachevski, Nicholas.
Geometrical researches on the theory of parallels / by Nicholas Lobachevski. - New ed. - La Salle, Ill. : Open Court Pub. Comp., 1914. - 50 p.
Includes bibliographical references.
Geometry.
Geometrical researches on the theory of parallels / by Nicholas Lobachevski. - New ed. - La Salle, Ill. : Open Court Pub. Comp., 1914. - 50 p.
Includes bibliographical references.
Geometry.