Unit 2    inversive geometry 

 - Keynes  The open university  1994 
 - 68p.  30cm. 
<br/><br/><label>ISBN: </label>0749247835 
<br/><br/><label>Subjects--Topical Terms: </label><br/>NON-EUCLIDEAN GEOMETRIES<br/>GEOMETRY
<br/><br/><label>Dewey Class. No.: </label>516.9  / OPE