Stahl, Saul A gateway to modern geometry : the Poincaré half-plane / Saul Stahl - 2nd ed. - viii, 255 páginas : ilustraciones ISBN: 9780763753818 0763753815 Subjects--Topical Terms: Geometría no euclidiana LC Class. No.: QA685 / S725 2008 Dewey Class. No.: 516.9