O'Neill, Barrett <br/><br/>
Elementary differential geometry / 
Barrett O'Neill 
 - New York :  Academic Press,  1966 
 - viii, 411 p. :  ill. ;  24 cm. 
<br/><br/>Bibliography : p. 391 
<br/><br/><label>ISBN: </label>0125267509 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry, Differential