ISBN 9780486600277 books & textbook
Non-Euclidean Geometry: A Critical and Historical Study of its Development
Roberto Bonola Nicholas Lobachevski John Boylai H. S. Carslaw Federigo Enriques
Dover Publications /2010-11-18 Paperback / 448 Pages
isbn-10: 0486600270 / isbn-13: 9780486600277
