Fenchel, W. <br/><br/>
Elementary geometry in hyperbolic space / 
Werner Fenchel 
 - xi, 225 pages :  illustrations ;  25 cm 
 - De Gruyter studies in mathematics ;  11 .
<br/><br/>Includes Bibliography and  index 
<br/><br/><label>ISBN: </label>0899254934 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry, Hyperbolic
<br/><br/><label>Dewey Class. No.: </label>516.9 FEN