O'Neill, Barrett <br/><br/>
Elementary differential geometry  / 

 - 2nd rev. 
 - San Diego:  Academic Press,  2006 
 - xi, 503p. Bibl. Index. 
<br/><br/><label>ISBN: </label>0120887355 
<br/><br/><label>Dewey Class. No.: </label>516  / On58.ED