Seydel, Ken <br/><br/>
Geometry  an exercise in reasoning 
Ken Seydel 
 - Philadelphia  W.B. Saunders  1980 
 - xiii, 416p 
<br/><br/><label>ISBN: </label>0721680704 
<br/><br/><label>Dewey Class. No.: </label>516 Se94G