Petersen,Peter <br/><br/>
Riemannian Geometry 
/ by Peter Petersen 
 - New York  Springe  1989 
 - xviii,499p. 
<br/><br/><label>ISBN: </label>9783319266527 
<br/><br/><label>Dewey Class. No.: </label>516.373  / PET/R