Authorized English translation with additional appendices by H. S. Carslaw. With an introd. by Federigo Enriques. With a suppl. containing the George Bruce Halsted translations of The science of absolute space, by John Bolyai ]and[ The theory of parallels, by Nicholas Lobachevski
New York
Dover Publications
]1955[
xii, 268, xxx, 71, 50 p.illus., diagrs.21 cm.
Bibliographical footnotes.
Geometria non euclidea.English
a critical and historical study of its development