Stahl Saul <br/><br/>
A Gateway to Modern Geometry  The Poincare Half-Plane 
/ by Saul Stahl 
 - 2nd.ed 
 - London  Jones and Bartlett Publishers  2008 
 - 255p. 
<br/><br/><label>ISBN: </label>139780763753818 
<br/><br/><label>Dewey Class. No.: </label>516.9  / STA/A