Iversen, Birger <br/><br/>
Hyperbolic geometry 

 - Cambridge:  Cambridge University Press,  1992 
 - ix,298p.:  23cm. 
<br/><br/>Includes bibliography and index 
<br/><br/><label>ISBN: </label>978-0-521-43528-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry<br/>hyperbolic
<br/><br/><label>LC Class. No.: </label>MATH QA685.I94