Coxeter, H. S. M <br/><br/>
Non-Euclidean geometry 
H.S.M. Coxeter 
 - 6th ed 
 - Washington, DC  Mathematical Association of America  c1998 
 - xviii, 336 p. : ill. ; 22 cm 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780883855225 
<br/><br/><label>ISSN: </label>98085640 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry, Non-Euclidean
<br/><br/><label>Dewey Class. No.: </label>516.9 COX