Kulczycki, Stefan Non-Euclidean geometry / by Stefan Kulczycki ; translated from Polish by Stanislaw Knapowski - Oxford : Pergamon Press, 1961 - 208 p. : ill. ; 28 cm. - International series of monographs on pure and applied mathematics ; v. 16 . Includes index Subjects--Topical Terms: Geometry, Non-EuclideanGeometry, HyperbolicMathematics Dewey Class. No.: 513.8