Seydel, Ken. <br/><br/>
Geometry, an exercise in reasoning / 
Ken Seydel. 
 - Philadelphia :  Saunders,  1980. 
 - xiii, 416 p. :  ill. ;  27 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0721680704(pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry.