Backman, Carl A. <br/><br/>
Introduction to Concepts of Geometry 
/ by Backman, Carl A. 
 - New Jersey:  Prentice-Hall,  1971. 
 - xvi, 320p.; 
<br/><br/><label>ISBN: </label>000 
<br/><br/><label>Dewey Class. No.: </label>513  / BAC/I