Cheeger, J & Ebin, D.G <br/><br/>
Comparison theorems in riemannian geometry 
J. Cheeger & D.G. Ebin 
 - Providence  American Mathematical Society  1975 
 - x  161 
<br/><br/><label>ISBN: </label>9780821844175 
<br/><br/><label>Dewey Class. No.: </label>8.05+8.06  / CHEE