Busemann, Herbert <br/><br/>
Projective geometry and projective metrics / 
by Herbert Busemann and Paul J. Kelly. 
 - New York :  Academic Press,  1968. 
 - viii, 332 p. :  illus. 
 - Pure and applied mathematics; a series of monographs and textbooks  v. 3 .
<br/><br/>Bibliography: p. [323] 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry, Projective.