Coxeter, H. S. M.  1907-2003, <br/><br/>
Non-Euclidean geometry / 
H.S.M. Coxeter. 
 - Sixth edition. 
 - 1 online resource (355 pages) :  illustrations. 
 - Spectrum series .
 - MAA spectrum. .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9781614445166 (e-book) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry, Non-Euclidean.
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Electronic books.
<br/><br/><label>LC Class. No.: </label>QA685  / .C78 1998 
<br/><br/><label>Dewey Class. No.: </label>516.9