Croft, Hallard T. Unsolved problems in geometry / Hallard T. Croft, Kenneth J. Falconer, Richard K. Guy. - 1a ed. - New York : Springer-verlag, 1991 - V. : il. ; 24 cm. - (problem books in mathematics) V.II . Incluye índice ISBN: 0387975063 Subjects--Topical Terms: Geometria--problemas, ejercicios, etc LC Class. No.: QA459 / C76 1991